could u plz tell me the function module to convert charecter into quantity

Hi Guru,

Could any one u help me how to convert a character type value to Quantity type value.

i have field xtab-qty(15) type c.

and xtab1-qty like zsql-qty.

zsql-qty data element type is meng01.

need to move xtab-qty to xtab1-qty.

could u please tell me any function module to convert this char into quantity type.

Thanks & Regards,

Lakshmi..