diff --git a/solution/tc_project_app/GVLs/GVL_APP.TcGVL b/solution/tc_project_app/GVLs/GVL_APP.TcGVL
index dd677f0..88ea1a4 100644
--- a/solution/tc_project_app/GVLs/GVL_APP.TcGVL
+++ b/solution/tc_project_app/GVLs/GVL_APP.TcGVL
@@ -3,13 +3,13 @@
   <GVL Name="GVL_APP" Id="{8fe9690c-7907-432e-bedb-6fc99b5ce255}">
     <Declaration><![CDATA[{attribute 'qualified_only'}
 VAR_GLOBAL
-    //0 for CX5130 and 1 for c6017-0020
+    //Defines the CPU type: 0 for CX5130 and 1 for c6017-0020
     eCPUType: E_CPUType; //:= 1;
 END_VAR
 
 VAR_GLOBAL CONSTANT
-    nAXIS_NUM: UINT := 0;
-    nPNEUMATIC_AXIS_NUM: UINT := 0;
+    nAXIS_NUM: UINT := 0; //Specifies the total of axes in the system 
+    nPNEUMATIC_AXIS_NUM: UINT := 0; //Specifies the totsl number pf pneumatic axes in the system
 END_VAR
 ]]></Declaration>
   </GVL>