Compiler error processing expression

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My LINQ works fine before I add below “Dim” expression:

The image shows a snippet of code written in VB.Net that retrieves a year value from a data column, converts it to an integer, and determines a tier value based on the year. (Captioned by AI)
The image shows a snippet of code written in VB.Net that retrieves a year value from a data column, converts it to an integer, and determines a tier value based on the year. (Captioned by AI)914×200 23.1 KB

I needed to add them because I need to do an IF condition on the column “YEAR”. How do I add this properly in the expression?