Hi, attached an example.
5 or more zeros yellow, from ten red.
I'm using as rule for f.c. formula like the following in A11
=AND(A11=0;ISNUMBER(SEARCH(REPT(A11;10);CONCATENATE(A1;A2;A3;A4;A5;A6;A7;A8;A9;A10;A11;A12;A13;A14;A15;A16;A17;A18;A19;A20))))
Hope it's a little help
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