Struggling with C# scripting help would be most appreciated

Hi guys,

I am trying to write a script using C# in grasshopper. The script will have two inputs X and Y and one output A. X is a list of values and Y is the length of list X.

The puesdocode is like this and it should be very simple

Convert object X to list
For each value of X if value is greater than 2 add 1 to A.
Output A

I have some experience programming in Java but as much as I read the documentation I can't work out how to do this in C# would anyone be able to help me out with the code? My biggest issue is that I don't know how to convert object X into a list it appears that it is coming into C# as just a string and NOT and list of Strings.

Any suggestions would be most appreciated cheers!