Why is the data type of this measure different between these two IF statements?

[MarkPBI]

So I'm having trouble getting the resulting DAX Measure return as a Text data type. For some reason it defaults to a Whole Number.

Matrix Background Color =
VAR MaxVal = MAX(Matrix_Desc[Grouping Order])
VAR ColorToReturn = IF(MaxVal==1,"#000000","#FFFFFF")
RETURN IFERROR(ColorToReturn,"#000000")

Screenshot:

I'm trying to dynamically set the background color of a matrix using this measure. But it won't allow me to select this measure because it's not  "Text" value.

This however, does work (but then it's not dynamic):

Matrix Background Color =
VAR MaxVal = MAX(Matrix_Desc[Grouping Order])
VAR ColorToReturn = IF(TRUE,"#000000","#FFFFFF")
RETURN IFERROR(ColorToReturn,"#000000")

Screenshot:

 

For some reason using a conditional statement in the IF part of the DAX leads to different result data types??

[MarkPBI · Accepted solution]

I was able to resolve this by changing the "Grouping Order" column that I was taking the MAX from. Apparently this value was a Text value, which was probably leading to an error when taking the MAX and comparing it to a whole number. Changing this column to a a Whole Number ensured that I was able to use the measure as a variable in conditional formatting to set the color.