Bex query related issue

Hello gurus, i have a question about bex query issue. I have a Zfield which has data like this in the infocube:

Material     ZField

100           ABGT HYUO HY

101           YUN YIN TYNJ

Now, i want to create a variable off of the ZFIELD but user wants to be able to put 'ABGT' and result set should return Material 100 record or if user inputs HY it should still return Material 100 record.

If user inputs YUN then it should bring material 101 record.

basically user wants to be able to input in the variable and variable should go and find it in the database and then bring any record which matches the user's input. something like CP in ABAP. is it possible at Query Designer level?

Thanks.