Hello everyone, I'm currently using ZPL commands to lock the access password ,kill password  and EPC successfully for my RFID tags. However, I'm facing an issue with locking the EPC (Electronic Product Code). It seems that the EPC is not being locked despite using the appropriate ZPL commands. Has anyone encountered a similar problem or could provide guidance on how to lock the EPC using ZPL commands? Any help would be greatly appreciated.  I have also attached the images reference for more clarification . And we also encountering void labels after exectuing ^RLB,0,6^FS  along the below commands .Thank you!"

^XA
^RFW,H^FD^909060605050FS
^RFW,H,P^FD12345678,11223344^FS
^RLM,L,L,O^FS
^XZ