Easier Debugging

I have a module with a funtion that has about 20 inputs and a boolean output.
I then create class and try to run this function. My problem is that, every time I run this, it says the 'Type Mismatch' Error. I have hovered my mouse over each variable and everything seems correct.
This has happened a number of times, and I have managed to correct it with a lot of trial and error.

My question is, is there a way of making this type of debugging easier? Is there a way for me to see which variable is causing the type mismatch (as at the moment it highlights the whole thing)?

Jagdip

you could consider making this function a class as well. Make each one of the inputs a property. Assigning the properties, one at a time might help you more quickly identify the "troublesome parameter".