Having an issue with a Nested "IF" Condition statement

Having an issue with a Nested "IF" Condition statement

I am uzing Zoho Analytics: 

This statement does works:

If(condition"Rep ID"='Rep 1', "Gross Margin"*.5,If(condition"Rep ID"='Rep 2', "Gross Margin"*.50,If(condition"Rep ID"='Rep 3', "Gross Margin"*.05,if(condition"REP ID"='Rep 4',"Gross Margin"*.05,if(condition"REP ID"='Rep 5',"Gross Margin"*.2,"Gross Margin"*.4)))))

 This statement doesn’t work:

If(condition"Rep ID"='Rep 1', "Gross Margin"*.5,If(condition"Rep ID"='Rep 2', "Gross Margin"*.50,If(condition"Rep ID"='Rep 3', "Gross Margin"*.05,if(condition"REP ID"='Rep 4',"Gross Margin"*.05,if(condition"REP ID"='Rep 5',"Gross Margin"*.2,if(condition"REP ID"='Rep 6',"Gross Margin"*.3,"Gross Margin"*.4))))))

Any help would be greatly appreciated!!