I am trying to write a vb component, which receives values from an asp page and then makes some calculations before returning the value. However, as I am fairly new to this game, it is coming up with an error saying 'overflow'!

The values I pass into the component are integers. These are then multiplied with some constant values, which can be anything up to 50000. I therefore stored these in a variable of type long. This value is then multiplied by 0.10, to give a percentage. The function then returns the value back to the asp page as a variable type double.

I hope this makes sense, and would appreciate it very much if anyone could suggest where I am going wrong.