Search Help Exit - Dependent Search Help

Hello All

My question is related to Sarch Help in SE11.

I have created a Search Help and implemented a Search help Exit.In My search help i have PLANT  and LGORT(storage loc.).

and i have taken the Search help of PLANT and LGORT from T001L table( H_T001W and H_T001L).

Now on the SELECTION SCREEN of SEARCH HELP ,based on PLANT selected, the Storage Location should come with filtered records based PLANT.

A kind of Dependent Seach help.

I have Checked that in TABLE T001L, when i do F4 on PLANT and then if i do F4 on LGORT it comes with the filtered records.

Kindly Help.

Points will be Awarded.