Hi every one,

I am trying to run this iif in DAX, but I get an error:

= iif (OR( [StationName.Value] = "CONGbann01", [StationName.Value] = "CONGccbr01"),

(Fields!DriftCorrection_pH7Value.Value + Fields!DriftCorrection_pH4Value.Value)/2.0,

Fields!DriftCorrection_pH7Value.Value +Fields!DriftCorrection_pH10Value.Value)/2.0)

 Here is the error:

The Value expression for the textrun 'DriftCorrection_pH7Value1.Paragraphs[0].TextRuns[0]' contains an error: [BC30201] Expression expected.

Also, I included 2 pictures of the variables (circled in red) I am using.