Hi i am trying to update a mapping from another contract. But it is not being updated. Rather a new mapping instance is being created. What am i doing wrong can anyone help

anyone can help?

Without seeing the code it will be hard to say, better share the contract here link or via pastebin

However from the way you are describing it it looks like you are working with a memeroy reference but I can't confirm

Are you using a interface to update it?

No, i am importing it and then, pasting its address in constructor to fetch its function.

try set a local variable = INTERFACE(address).. import the interface into the contract

you can look at oppenzeppelin IERC20 for reference

its an interface too

Thanks mate i tried this too.
But it is now resolved. I have now modified the function such that it also takes and address argument where the address is msg.sender. and it worked successfully.

Glad it worked out mate