Conditional Formatting Gradient Fill

[nburaq]

Hi Gents,
I am trying to apply gradient fill for week number so as the week number increases I want gradient fill darker. How can I accomplish this? Thanks for your help and comments! (Ps: In normal gradient rule, gradient lightens as number/value increases)

 

[nburaq]

I have forgotten to add screenshot. I just want starting point as white and goes completely red at the end in data bar

 

[Fluff]

If you are using a data bar, then just change the "Bar Direction" to Right-to-left