Can't recording long textu2019s using LSMW

Hello,

I am creating new BP's on crm 7.0 using LSMW.

Everything works for me except adding the Long text to new or existing BP's.

I tried to use transaction BP but when saving the recording I can't see the long text I used on the script.

I also tried to use transaction BUG3 to edit the BP's long text but the same issue (I can't see the Long text on the script)?

Is there any standard Bapi that can do the work (Add long text to BP)?

Need help ASAP.

Thanks

Nir