FORMAT CONTROL/Index Match issue

Helloe evryone,

I have an Format Control (I think it's working ok)

but my index match is not. I have stripped my spreadsheet of data but struggling to see why my data is not returning from another tab? please can anyone help?

thank you

Link cell to B12

Then C12:D12
=INDEX('BACKGROUND DATA'!I$1:I$3,$B12)

thank you Bo_Ry