Output requested Data based on a cross reference to a table

Output requested Data based on a cross reference to a table

I have a table that i want to have users be able to put in the X and Y axsis and have creator output the intersect data.  Basically i have inputed a chart that usually you can lookup the years your have been there and current level with the company and the intersect point would be their pay. EXAMPLE BELOW



                        TIME
 Level      1              2               3
1            20            70            120
2            30            80            130
3            40             90            40
4            50            100          150

So lets say a user inputted that they Level was 3 and time was 2 the output would be 90. If they said their level was 4 and time was 3 it would out put 150.

I already have the table in ZC and created the form that the user would see to input their data, i just dont know how to make ZC cross reference the table like that.

THANKS IN ADVANCE FOR ANY HELP YOU CAN GIVE!!