Comma Problem

Hello everybody,

I am developing some plugins in CRM-Customizing in C# (Visual Studio).

Unfortunatly I get a problem by defining decimal fields (with just one comma number) because it looks better in the layout.
The problem is that also by calculation totals it doesnt take the whole number like 12.2335245  but it takes just one comma number like 12.2.
Can someone help me to solve this problem ?

Thanks in advance,

best regards