Hello, to be honest, I have hot water, but I don't want to bathe under a tap, but with a shower. As I wrote above, I know how to do it with conditional formatting. I mark exactly the cells I want, then I say from which cell the number should be followed and if 1500+100 and if it finds a value greater than or equal to color it in the color I want. Then 1500+200 in another color and so on until it reaches the last value I set. Thank you very much for the link, but it doesn't say anything about macros, actually this about coyote, I'm asking for help. Because I have to make over 29 worksheets and with a macro it would be many times faster. Thanks again! Be alive and healthy!