diff --git a/cli-examples/TakeOffer.sh b/cli-examples/TakeOffer.sh
index ff68e56..b53b300 100755
--- a/cli-examples/TakeOffer.sh
+++ b/cli-examples/TakeOffer.sh
@@ -2,11 +2,13 @@
 source "env.sh"
 
 # Take a BSQ swap offer.
-$BISQ_HOME/bisq-cli --password=xyz --port=9998 takeoffer --offer-id=8368b2e2-anb6-4ty9-ab09-3ebdk34f2aea
+# The amount param is optional.
+$BISQ_HOME/bisq-cli --password=xyz --port=9998 takeoffer --offer-id=8368b2e2-anb6-4ty9-ab09-3ebdk34f2aea --amount=0.1
 
 # Take an offer that is not a BSQ swap offer.
-# The payment-account-id param is required, the fee-currency param is optional.
+# The payment-account-id param is required, the amount and fee-currency params are optional.
 $BISQ_HOME/bisq-cli --password=xyz --port=9998 takeoffer \
     --offer-id=83e8b2e2-51b6-4f39-a748-3ebd29c22aea \
     --payment-account-id=fe20cdbd-22be-4b8a-a4b6-d2608ff09d6e \
+    --amount=0.08 \
     --fee-currency=BTC
diff --git a/java-examples/gradle/README.md b/java-examples/gradle/README.md
new file mode 100644
index 0000000..765aa05
--- /dev/null
+++ b/java-examples/gradle/README.md
@@ -0,0 +1,27 @@
+# How to upgrade the Gradle version
+
+Visit the [Gradle website](https://gradle.org/releases) and decide the:
+
+ - desired version
+ - desired distribution type
+ - what is the sha256 for the version and type chosen above
+
+Adjust the following command with tha arguments above and execute it twice:
+
+```asciidoc
+$ ./gradlew wrapper --gradle-version 7.5 \
+    --distribution-type bin \
+    --gradle-distribution-sha256-sum cb87f222c5585bd46838ad4db78463a5c5f3d336e5e2b98dc7c0c586527351c2
+```
+
+The first execution should automatically update:
+
+- `java-examples/gradle/wrapper/gradle-wrapper.properties`
+
+The second execution should then update:
+
+- `java-examples/gradle/wrapper/gradle-wrapper.jar`
+- `java-examples/gradlew`
+- `java-examples/gradlew.bat`
+
+The four updated files are ready to be committed.
diff --git a/java-examples/gradle/wrapper/gradle-wrapper.properties b/java-examples/gradle/wrapper/gradle-wrapper.properties
index 5925064..012d6d9 100644
--- a/java-examples/gradle/wrapper/gradle-wrapper.properties
+++ b/java-examples/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=b586e04868a22fd817c8971330fec37e298f3242eb85c374181b12d637f80302
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionSha256Sum=cb87f222c5585bd46838ad4db78463a5c5f3d336e5e2b98dc7c0c586527351c2
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/java-examples/gradlew b/java-examples/gradlew
index 1b6c787..a69d9cb 100755
--- a/java-examples/gradlew
+++ b/java-examples/gradlew
@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
diff --git a/java-examples/gradlew.bat b/java-examples/gradlew.bat
index ac1b06f..53a6b23 100644
--- a/java-examples/gradlew.bat
+++ b/java-examples/gradlew.bat
@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal
diff --git a/java-examples/src/main/java/bisq/rpccalls/TakeOffer.java b/java-examples/src/main/java/bisq/rpccalls/TakeOffer.java
index bf1e17b..fc9692f 100644
--- a/java-examples/src/main/java/bisq/rpccalls/TakeOffer.java
+++ b/java-examples/src/main/java/bisq/rpccalls/TakeOffer.java
@@ -28,7 +28,8 @@ public class TakeOffer extends BaseJavaExample {
             var offerCategory = offersStub.getOfferCategory(getOfferCategoryRequest);
             // Create a takeoffer request builder with just the offerId parameter.
             var takeOfferRequestBuilder = TakeOfferRequest.newBuilder()
-                    .setOfferId("83e8b2e2-51b6-4f39-a748-3ebd29c22aea");
+                    .setOfferId("83e8b2e2-51b6-4f39-a748-3ebd29c22aea")
+                    .setAmount(1_000_000L);  // 1 million satoshis = 0.01 BTC
             //  If offer is not a BSQ swap offer, add the paymentAccountId and takerFeeCurrencyCode parameters.
             if (!offerCategory.equals(BSQ_SWAP))
                 takeOfferRequestBuilder
diff --git a/python-examples/bisq/rpccalls/take_offer.py b/python-examples/bisq/rpccalls/take_offer.py
index 4ad872c..b77c3a4 100644
--- a/python-examples/bisq/rpccalls/take_offer.py
+++ b/python-examples/bisq/rpccalls/take_offer.py
@@ -8,7 +8,7 @@ import bisq.api.grpc_pb2_grpc as bisq_service
 
 
 def main():
-    grpc_channel = grpc.insecure_channel('localhost:9999')
+    grpc_channel = grpc.insecure_channel('localhost:9998')
     grpc_offers_service_stub = bisq_service.OffersStub(grpc_channel)
     grpc_trades_service_stub = bisq_service.TradesStub(grpc_channel)
     api_password: str = 'xyz'  # getpass("Enter API password: ")
@@ -16,13 +16,17 @@ def main():
         # We need to send our payment account id and an (optional) taker fee currency code if offer
         # is not a BSQ swap offer.  Find out by calling GetOfferCategory before taking the offer.
         get_offer_category_response = grpc_offers_service_stub.GetOfferCategory.with_call(
-            bisq_messages.GetOfferCategoryRequest(id='4940749-73a2e9c3-d5b9-440a-a05d-9feb8e8805f0-182'),
+            bisq_messages.GetOfferCategoryRequest(id='MGAQRIJJ-3aba77be-588c-4f98-839e-53fac183b823-194'),
             metadata=[('password', api_password)])
         offer_category = get_offer_category_response[0].offer_category
         is_bsq_swap = offer_category == bisq_messages.GetOfferCategoryReply.BSQ_SWAP
-        take_offer_request = bisq_messages.TakeOfferRequest(offer_id='4940749-73a2e9c3-d5b9-440a-a05d-9feb8e8805f0-182')
+        take_offer_request = bisq_messages.TakeOfferRequest(
+            offer_id='MGAQRIJJ-3aba77be-588c-4f98-839e-53fac183b823-194',
+            # 10 million satoshis = 0.1 BTC
+            amount=10000000
+        )
         if not is_bsq_swap:
-            take_offer_request.payment_account_id = '44838060-ddb5-4fa4-8b34-c128a655316e'
+            take_offer_request.payment_account_id = '88892636-81a1-4864-a396-038297e112cf'
             take_offer_request.taker_fee_currency_code = 'BSQ'
         response = grpc_trades_service_stub.TakeOffer.with_call(
             take_offer_request,
diff --git a/reference-doc-builder/gradle/README.md b/reference-doc-builder/gradle/README.md
new file mode 100644
index 0000000..c051020
--- /dev/null
+++ b/reference-doc-builder/gradle/README.md
@@ -0,0 +1,27 @@
+# How to upgrade the Gradle version
+
+Visit the [Gradle website](https://gradle.org/releases) and decide the:
+
+ - desired version
+ - desired distribution type
+ - what is the sha256 for the version and type chosen above
+
+Adjust the following command with tha arguments above and execute it twice:
+
+```asciidoc
+$ ./gradlew wrapper --gradle-version 7.5 \
+    --distribution-type bin \
+    --gradle-distribution-sha256-sum cb87f222c5585bd46838ad4db78463a5c5f3d336e5e2b98dc7c0c586527351c2
+```
+
+The first execution should automatically update:
+
+- `reference-doc-builder/gradle/wrapper/gradle-wrapper.properties`
+
+The second execution should then update:
+
+- `reference-doc-builder/gradle/wrapper/gradle-wrapper.jar`
+- `reference-doc-builder/gradlew`
+- `reference-doc-builder/gradlew.bat`
+
+The four updated files are ready to be committed.
diff --git a/reference-doc-builder/gradle/wrapper/gradle-wrapper.properties b/reference-doc-builder/gradle/wrapper/gradle-wrapper.properties
index 5925064..012d6d9 100644
--- a/reference-doc-builder/gradle/wrapper/gradle-wrapper.properties
+++ b/reference-doc-builder/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=b586e04868a22fd817c8971330fec37e298f3242eb85c374181b12d637f80302
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionSha256Sum=cb87f222c5585bd46838ad4db78463a5c5f3d336e5e2b98dc7c0c586527351c2
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/reference-doc-builder/gradlew b/reference-doc-builder/gradlew
index 1b6c787..a69d9cb 100755
--- a/reference-doc-builder/gradlew
+++ b/reference-doc-builder/gradlew
@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
diff --git a/reference-doc-builder/gradlew.bat b/reference-doc-builder/gradlew.bat
index ac1b06f..53a6b23 100644
--- a/reference-doc-builder/gradlew.bat
+++ b/reference-doc-builder/gradlew.bat
@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal