Google Spreadsheet Conditional Multiple Rows Formatting Based on range

Question

I wish to conditionally format cells within a range based on another range...
Eg: format D7:I7 if a value is found in D19:I19.
I've looked but couldn't find a way...
Tried both HLOOKUP& MATCH:

=HLOOKUP(D7,D$24:I$24,,FALSE)
=MATCH(D$7,D$24:I$24,0)`

I have also tried a simple =D$19:I$19 - this one returns only partial formatting on the ranges selected - E9, G11, H13....
Ideas??

Answer 1

Applies to range: D7:I7

Custom formula is: =countif($D19:$I19,$D$7)>0