DAX comparison operations do not support comparing values of type Text with values of type Integer

Good day,

I am having some trouble with a formula, I am trying to add the fiscal year as a column but get this error: 

*DAX comparison operations do not support comparing values of type Text with values of type Integer. Consider using the VALUE or FORMAT function to convert one of the values.

Here is the formula and table:

Financial Year =

VAR CY =

RIGHT ( YEAR ( 'Date Table'[Date] ), 4 )

VAR LY =

RIGHT ( YEAR ( 'Date Table'[Date] - 1 ), 2 )

VAR NY =

RIGHT ( YEAR ( 'Date Table'[Date] = 1 ), 2 )

VAR FISCALYEAR =

IF ( MONTH ( 'Date Table'[Date] >= 6 ), CY & NY, LY & CY )

RETURN

FISCALYEAR