Adding a Business Rule, which allows getting and manipulating system properties (#255)

* Adding a Business Rule, which allows manipulating system properties

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Author: R3J3NT

Business Rules/Manipulating system properties values/ScreenShot_0.PNG

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+**Business Rule**
+
+Script which allows *getting value of specific system property and manipulate these values*. In this example, true/false property is got to determine if script should be executed. Then value of system property which is keeping last created user which gets 'admin' role is updated.
+
+**Create new system property**
+
+Before you can get or manipulate custom system property you need to create it in [sys_properties] table. Below you can see example of created property:
+
+![Creating System Property](ScreenShot_0.PNG)
+
+**Example configuration of Business Rule**
+
+![Configuration](ScreenShot_1.PNG)
+
+**Example execution effect**
+
+
+![Execution effect](ScreenShot_2.PNG)

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+(function executeRule(current, previous /*null when async*/ ) {
+    //Script to read and update specific system properties (in this example to update last created user name with role admin)
+
+    //Get value of property which you would like to verify
+    var updateAdminUser = gs.getProperty('user.updateNewAdminUsers');
+
+    //Verify if property is set to true
+    if (updateAdminUser) {
+
+        //Get property which you would like to update
+        var property = new GlideRecord('sys_properties');
+        property.addQuery('name', 'user.lastCreatedAdmin');
+        property.query();
+        if (property.next()) {
+
+            //Update value of choosed property
+            property.value = current.user.getDisplayValue();
+            property.update();
+        }
+    }
+})(current, previous);