To get the custom paper size from network printer

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VB

I add the custom form to the printer server properties & size assign of the paper in computer 'A'.
I getting the custom paper size from local computer 'A' where the printer has installed by programming.

Now I add network printer to another computer 'B'.
But not getting the paper size of network printer from computer 'B' where the printer install on computer 'A'
How to get the custom paper size the network printer from computer 'B'?

Please help me anybody for above problems........