Manula transfer order using function modules

Hi,

I am trying to create a transfer order using l_to_create_single.

very thing works fine. the only problem is vbeln value is not updated in to table ltak.

here i am creating a TO for single material.

If i use l_to_create_dn, vbeln value is updated. but TO is created for all the items( materials) in delivery at a time.

this is not the desired result.Is there any chance that i can create a TO using l_to_create_dn for only a single material.

Please help me.

Thanks &

Kind regards

Vamsi.