FM/BAPI to create BOM where alternative can be passed as input

Hi

My requirement is to create BOM of a material where I need to input 'Alternative BOM' also like ijn CS01 t-code.

I got one FM CSAP_MAT_BOM_CREATE which is creating BOM , but it does not take 'Alternative BOM' as input parameter, rather it creates default alternative BOM. But I need a FM which will take alternative BOM as input.

Please help.