diff --git a/entity/SlaveAdministration_entity/entityfields/bindata/onValueChange.js b/entity/SlaveAdministration_entity/entityfields/bindata/onValueChange.js
index 5a16b684c3891f2582af83c9182dbfb6e895fb2f..73eb99a7efe13e70f95cc0c8e2feb9ee562cab6f 100644
--- a/entity/SlaveAdministration_entity/entityfields/bindata/onValueChange.js
+++ b/entity/SlaveAdministration_entity/entityfields/bindata/onValueChange.js
@@ -1,3 +1,4 @@
+import("Util_lib");
 import("system.translate");
 import("OfflineClientSync_lib");
 import("system.question");
@@ -9,7 +10,7 @@ if (vars.get("$sys.operatingstate") == neon.OPERATINGSTATE_EDIT || vars.get("$sy
 {
     var licenseID = "";
     var binData = vars.get("$field.bindata");
-    if (binData != "" && binData != null )
+    if (!Utils.isNullOrEmpty(binData))
     {
         licenseID = OfflineClientSyncUtils.getIDFromLicense(binData);
         vars.set("$field.SLAVEUID", licenseID);