How can I get the Card Code when I'm in PartnerBussines form?

Hellow,

How can I get the Card Code when I'm in PartnerBussines form?

I cauched the Ivent of '134' form and I inserted there

a new button.

My button has to execute another (external)program

and to send the CardCode as a parameter.

I do it with Shell function, But how can I get the Card Code?

Can you help me and send me the code?

I need to do it s.o.s

Thank you very much

Ruthi