DMEE strucutre design(not able to fetch correct value)

Hi Experts,

I am unable to fetch the correct constant value into DMEE file.

we have two codes 52 and 54. vendors who are having bank accounts we need to give the value 52 and who does not bank account we need to use 54.

I have given below conditions

Arg-1      Arg-2     type  operator agr2-1 agr2-2 type o

FPAYH  ZBNKY   2           =          ' '                    1      (if value is initial(does not any value) in this field it shows 54)

Arg-1      Arg-2     type  operator agr2-1 agr2-2 type o

FPAYH  ZBNKY   2           <>          ' '                   1      (if value is not initial(value is available) in this field it shows 52).

now I am getting code 54 for all supplier who are having account and not having.

Could you please help me on this.

Regards,

Guna.