{=IF(ISBLANK(INDIRECT("F"&ROW()*5+21&":L"&ROW()*5+ 21)),"",SUM(IF(F31:L31<0,INDIRECT("F"&ROW()*5+21&" :L"&ROW()*5+21),FALSE)))}

{=IF(ISBLANK(INDIRECT("F"&ROW()*5+21&":L"&ROW()*5+ 21)),"",SUM(IF((INDIRECT("F"&ROW()*5+21&":L"&ROW() *5+21))<0,INDIRECT("F"&ROW()*5+21&":L"&ROW()*5+21) ,FALSE)))}

The first formula works but it is not really what I want to do, when I
change it to the second formula which is what I want it to do it gives me a
#VALUE! ERROR.

This is the only part that changes:

F31:L31<0 changes to (INDIRECT("F"&ROW()*5+21&":L"&ROW()*5+21))<0

Hope someone can give me a solution to fix this problem! Thanks in advance!