diff --git a/tests/00_start.php b/tests/00_start.php
index 416a2bd09791082c813d053dfac7b04d89d2da49..e36f20093f57ba912ddb947cbb48f692e2ba1918 100755
--- a/tests/00_start.php
+++ b/tests/00_start.php
@@ -5,7 +5,7 @@ require_once __DIR__.'/../inc_functions.php';
 require_once __DIR__.'/../inc_vars.php';
 
 $AMCLI??=__DIR__.'/../src/amcli.php';
-$AMCLI=__DIR__.'/../built_packages/amcli';
+// $AMCLI=__DIR__.'/../built_packages/amcli';
 
 _chdir(__DIR__);
 
diff --git a/tests/100_set_metadata.php b/tests/100_set_metadata.php
index faad586998c14e964fac8b263788846bb7f3be0b..edbdd63520c72aceccea86137a9bbf123e25ad8b 100644
--- a/tests/100_set_metadata.php
+++ b/tests/100_set_metadata.php
@@ -5,7 +5,7 @@ echo "
 WHAT: Set application metadata
 ";
 
-$sInifile=__DIR__."/configs/metadata.ini";
+$sInifile="configs/metadata.ini";
 
 // --------------------------------------------------------------------
 // FUNCTION
@@ -52,11 +52,7 @@ foreach($aIni["notifications"]["email"]??[] as $sEmail){
     _ok(); echo "\n";
 }
 
-foreach($aIni["notifications"]["slack"]??[] as $sValue){
-    $aArray = json_decode($sValue, 1);
-    $sChannel = array_keys($aArray)[0];
-    $sWebhook = array_values($aArray)[0];
-
+foreach($aIni["notifications"]["slack"]??[] as $sChannel => $sWebhook){
     echo "Check Slack '$sChannel'\n";
     compare_strings("Check Slack '$sChannel'", $sWebhook, $aResponse["meta"]["notifications"]['slack'][$sChannel]??'');
 }
diff --git a/tests/300_dynamic_value.php b/tests/300_dynamic_value.php
new file mode 100644
index 0000000000000000000000000000000000000000..8e2936ffc3317b723bdf96ef3eb48b1c241ab7e0
--- /dev/null
+++ b/tests/300_dynamic_value.php
@@ -0,0 +1,31 @@
+#!/usr/bin/env php
+<?php
+
+echo "
+WHAT: Test dynamic ini value
+";
+
+$sInifile="configs/dynamic_values.ini";
+
+echo "--- Content of ini file:\n"
+    .preg_replace(
+        "/.*(params.*\n)\n.*/s",
+        "$1",
+        file_get_contents($sInifile)
+    )."\n"
+    ;
+$aIni=parse_ini_file($sInifile, 1);
+
+echo "--- parsed ini value for the check:\n";
+print_r($aIni["hello plugin"]['params']);
+$sMessage=$aIni["hello plugin"]['params']['message']??false;
+if($sMessage)
+{
+    if(strstr($sMessage, "\$\{")){
+        _abort('in params -> message the variable $\{USER\} was not replaced');
+    } else {
+        _ok('in params -> message the variable $\{USER\} was replaced');
+    }
+} else {
+    _abort("Message param was not found.");
+}
diff --git a/tests/configs/dynamic_values.ini b/tests/configs/dynamic_values.ini
new file mode 100644
index 0000000000000000000000000000000000000000..dab4cb4df805910896e2f12c7e00942c9063b1d0
--- /dev/null
+++ b/tests/configs/dynamic_values.ini
@@ -0,0 +1,24 @@
+; =======================================================================
+;
+; APPMONITOR CLI CLIENT
+;
+; to understand the entries of metadata see JSON in 
+; <https://os-docs.iml.unibe.ch/appmonitor/Client/Description_of_response.html>
+;
+; for the checks see its parameters
+; <https://os-docs.iml.unibe.ch/appmonitor/PHP_client/Plugins/Checks/index.html>
+;
+; =======================================================================
+
+; -----------------------------------------------------------------------
+; CHECKS
+; -----------------------------------------------------------------------
+
+["hello plugin"]
+description='I test a dynamic value USER = ${USER}'
+function="hello"
+
+; to have dynamic values in params do not use JSON but array syntax
+params[message]="Here is ${USER}"
+
+; -----------------------------------------------------------------------
diff --git a/tests/configs/metadata.ini b/tests/configs/metadata.ini
index 09097225a71d98ed07ae1b4d7cf449fa6d8e25eb..d81e6f8aa1a81311c128ecce15b8f9ebda540ed7 100644
--- a/tests/configs/metadata.ini
+++ b/tests/configs/metadata.ini
@@ -28,7 +28,7 @@ email[]="webmaster@example.com"
 
 ; for slack use the following format
 ; <channelname> + comma + <webhook url>
-slack[]='{ "#support-channel": "https://hooks.slack.com/services/XXXXXX/YYYYYY/ZZZZZ" }'
+slack["#support-channel2"]="https://hooks.slack.com/services/XXXXXX/YYYYYY/ZZZZZ"
 
 
 ; -----------------------------------------------------------------------