Hi, I want to check if a value inputted is a multiple of 0.5... I know I should use the mod function and check if the mod value is 0 or not. Since the error "divided by zero" will be occured if I try to mod a value with 0.5, therefore I multify the inputted value with 10 then mod by 5 should give me the answer. However, if the inputted value is 31.05, I will have the mod value equal to 0 as well. Anyone have suggestions on my problem? Thanks.