Using the sum if function

Question

I have a sum if function and works well but I have to manually update the conditional statement. This works well when there are only a few lines but in this particular sheet its almost 200 lines. Does anybody know a way to tweak this formula.

Thanks

I've tried

=SUMIF($C$7:$C$56,"=$R15",$H$7:$H$56)

and

=SUMIF($C$7:$C$56,"=R15",$H$7:$H$56)

Column R is the information i'm updating manually. When I type in a specific number the formual works but if I leave it as a column then it returns 0.

so if I did

=SUMIF($C$7:$C$56,"=21",$H$7:$H$56) This works

Answer 1

try this:

=SUMIF($C$7:$C$56, $R15, $H$7:$H$56)