Can I change an address of a OPC UA variable via script?

[JagJag1]

Hi, I am wondering if someone knows if there its possibility to change the PLC identifier of a variable via script. I.e. I would like the variable bellow to a different address in the PLC

PLC identifier:
|var|CODESYS Control Win V3 x64.Application.GVL.astItem[0].iStatus

New identifier

|var|CODESYS Control Win V3 x64.Application.GVL.Robot[1].iStatus

[HmiGuide · Accepted solution]

Instead of changing the Opc UA address on client side, you can solve this in the PLC with a variable of type:
iStatusRef: REFERENCE TO INT:=iStatus1;

Variable definition of referenced variables.

{attribute 'global_init_slot' := '1000'} // defines initialization order. A lower value means an earlier initialization
VAR_GLOBAL
	{attribute 'symbol' := 'none'}
    iStatus1: INT:=100;
	{attribute 'symbol' := 'none'}
    iStatus2: INT:=200;
END_VAR

Variable definition of OpcUa variable

{attribute 'symbol' := 'readwrite'}
{attribute 'global_init_slot' := '2000'} // defines initialization order. A lower value means an earlier initialization
// https://docs.automation.boschrexroth.com/doc/3513354743/attribute-global-init-slot/6-06/en/
VAR_GLOBAL
	// reference must be initialized
	iStatusRef: REFERENCE TO INT:=iStatus1;
END_VAR

 PLC example program which changes the reference

IF (iSelect=1) THEN
	iStatusRef REF= iStatus1;
ELSE
	iStatusRef REF= iStatus2;
END_IF

Docu of attribute-global-init-slot 

[webiq-sk · Accepted solution]

WebIQ does not currently support this. The solution from @HmiGuide looks like a great way.

"You cannot change the HMI from the HMI" - with some exceptions like users, recipes, recorder data etc.,, but not the HMI configuration itself.