You try to push a square through a circle hole.
An integer attribute will only accept whole numbers. If you need decimal numbers, use the decimal attribute type.
Hey Madhura,
I think you are looking for a Decimal value, with a decimal you can have 8 digits after the decimal point.
I'm pretty sure that Mendix doesn't allow to use comma's as a input, but with the option “group digits” you can show the value as 10,000,000 on your page.