small help

i am facing one prblm..

*collect value from mbew

SELECT SINGLE * FROM mbew wHERE matnr = t_itab-matnr.

t_itab-verpr = mbew-verpr.

in this code i have to check verpr value .If verpr is 0.00 then i have to rplace by 0.01.

i have try with if comdition but itdoesnt work out.

can anyone throw some light how to change the value if verpr have value 0.00.

Means to say only if verpr gets 0.00 then only 0.01 else it should write the same value as in database table

plz can anyone help.

thanks in advance