Counting columns as condition in SUMIF

[tomasinjapan]

For calculating purchase of new goods in a fleet, I want to check all previous years if goods need to be replaced.
I looked a lot to try to find an answer but my question is difficult to describe in Google :-(

See below example

Please Login or Register  to view this content.

I tried below formula, but it doesn't work. Any idea's?

=H2-G2+SUMIF($C3:G3,"=" & (COLUMN(CurrentCell)-COLUMN(G3)+1),$C4:G4)

All help greatly appreciated!

[:) Sixthsense :)]

Attach a sample workbook. Make sure there is just enough data to make it clear what is needed. Include a BEFORE sheet and an AFTER sheet in the workbook if needed to show the process you're trying to complete or automate. Make sure your desired results are demonstrated, mock them up manually if needed. Remember to desensitize the data.

Click on GO ADVANCED and use the paperclip icon to open the upload window.

View Pic

[AliGW]

Also define “It doesn’t work”, which tells us nothing useful.

[tomasinjapan]

Sorry for my bad problem explanation.

But I think I cracked it...
=H2-G2+SUMIF($C3:G3,"=" & (COLUMN(CurrentCell)-COLUMN(G3)+1),$C4:G4)

should be:
=H2-G2+SUMPRODUCT(((COLUMN(H3)-COLUMN($C3:G3))=($C3:G3))*($C3:G3<>"")*($C4:G4))

Thanks for the feedback

[FlameRetired]

Once again, please upload a sample workbook. We need context.