IF Statement where Logic Test is a cell that contains a Vlookup

HI,

I'm having a brain freeze.. and may not have tackled this in the best way.. but here is my issue.

I have a Nested If that is testing for 2 cells being blank and if they are then it returns blank... (i know I could use ISBLANK).. but my issue is the IF statement further in...

=IF(AND(AH4="",BH4=""),"",IF(FL4>74.9,"A2","AS"))

Cell FL4 contains a Formula... =IFERROR((VLOOKUP(BH4,A2_Pts,2,1)),"")

So Excel appears to be stating that the Cell contains a number greater than 74.9... as it is a formula..
The Vlookup is pulling a range of values depending upon what is entered on another cell..

Any help would be appreciated..

Thanks

Dave

Almost cracked it.. sorry I think I didn't explain myself... The issue that I have now is that FL4 can be blank... my issue is that "AS" should be showing... as I have only got data "A" in AH4... and BH4 is blank..so FL4 SHOULD return Nothing.. but it doesn't as the formula is there.. I wondered if it is the IFerror..