Using slicer for a measure

Hey Michael,

Look at this downloadable tutorial pbix. It involves creating a table like edhans  mentioned.

Here you go Michael_Gold 


I used this measure. You can see I kept your basic measure but assigned to to the varRiskAssessment variable, then used it in the Result variable.

Risk_Flag =
VAR varSelectedRisk =
    SELECTEDVALUE( 'Risk Slicer'[Risk] )
VAR varRiskAssessment =
    IF(
        [Gap] > 30,
        "High",
        IF(
            [Gap] > 15,
            "Medium",
            IF(
                [Gap] > 0,
                "Low",
                "No risk"
            )
        )
    )
VAR Result =
    SWITCH(
        TRUE,
        varSelectedRisk = "High"
            && varRiskAssessment = "High", "High",
        varSelectedRisk = "Medium"
            && varRiskAssessment = "Medium", "Medium",
        varSelectedRisk = "Low"
            && varRiskAssessment = "Low", "Low",
        varSelectedRisk = "No Risk"
            && varRiskAssessment = "No Risk", "No Risk",
        ISBLANK(varSelectedRisk), varRiskAssessment
    )
RETURN
    Result

then I set the measure filter on the table visual to hide when Risk_Flag was blank. If you don't do that, then the High/Med/Low will vanish from the Risk Flag, but the record will still show up as blank (though your conditional formats would still be there). I figured hiding the unselected value is what you wanted, thus the measure filter shown below.

The slicer came from a manually entered table. Go to Transform Data and you will see it, and click the Gear icon next to the Source step to edit that table.
See this PBIX.

It is a multi-step process, but hopefully you can follow my logic and example. Let me know if you have questions.