Index array solution

I'm trying to correct this formula because it's not returning the right value.

=INDEX(EBITDA_Forecasted!$FP$5:$IU$5,MATCH(TRUE,EBITDA_Forecasted!$FP7:$IU7>0,))

What I'm trying to do is index row 5 (dates going across) and looking for row 7 (when treatments are >0) and returning the date value.

Did I mess up the formula somewhere?