CFM1 flags

Hi experts,

I am working on a complex CIF for Material master, customer material and customer material info record.

I am writing logic in function exit EXIT_SAPCLMAT_001. My requirement is based on the check boxes in CFM1, I need to write logic .(MATLOC , MARC etc data).

I am unable to get the all the check boxes/flags of CFM1 tcode to this exit.

Could anybody help me

1)how to get the selection screen checkbox data from CFM1 to this exit. if not this exit, how to handle this requirement.

2)when selected 'customer material'....Customer material details are populated. How to get Customer number (KUNNR) value to this exit? I tried to search all CIF importing/changing tables in exit like MATLOC/MARA/MARC ..etc, but unable to get customer number

example: in CFM1 ---> material dependent object --> check box   'material'   ... CB 'customer Material'...

I have done lot of searching on this forum, but unable to get the information.

Thanks for your help.