1. Create a Main-Form with a combobox with Source Data from Expense Name field on the Header Section of the form.
2. Change the Name Property Value of the combobox to cboExp.
3. Design a Sub-Form with the Salaries detail data as Record Source. You need to place the Expense Name field also in the Sub-form from the salaries table.
4. Insert the Sub-Form into the Detail Section of the Main form.
5. Display the Property Sheet of the Sub-Form.
6. Change the Link Master Field Property value to cboExp.
7. Change the Link Child Field Property value to Expense Name field name.
8. Save the Form.
9. Open the Main-Form with the Sub-form in it in normal View.
10. Select an Expense Name in the Combobox.

If your design and settings of the Forms are correct you should see the corresponding Salaries Records on the subform.

1- in posting data into forms, field name is GL_code
2- when operator enter the expense name i.e Salaries exp – manufacturing dept.
3- Ms access should filter the name salaries, there may be 5 or 6 Ledger-names salaries, it should show all at one time.

plz solve my problem