Issue with returning a value from a Numeric Range slicer in a second measure

I’m having a issue with returning a value from a Numeric Range slicer

Initally it is returning the correct value , but when used later on it is returning the default value not the selected value

But when I use in another measure as a calculation it retunes the default value of the slicer, which in this case is 35,

The initial Measure is

Efficiency - Seminars Value = SELECTEDVALUE('Efficiency - Seminars'[Efficiency - Seminars], 35)

Returns 70, correct as the slicer is set to 70

I tried a using it in a basic measure in the table I wish to do the calculation such as (simplified for this message)

Efficiency = 'Efficiency - Seminars'[Efficiency - Seminars Value]

But returns 35, it should be 70

What have I done wrong

(I have 5 slicers and some screen shots don’t match)

Final equation is,  ut it jusk keep returning 35

Efficiency = IF([Space Type] = "Studios", 'Efficiency - Studio'[Efficiency - Studio]/100,

    IF([Space Type] = "Lectures", 'Efficiency - Lectures'[Efficiency - Lectures Values]/100,

    IF([Space Type] = "Seminars", 'Efficiency - Seminars'[Efficiency - Seminars Value]/100,

        IF([Space Type] = "Technical Workshops", 'Efficiency - Technical'[Efficiency - Technical Value]/100,

               IF([Space Type] = "Tutorial", 'Efficiency - Tutorial'[Efficiency - Tutorial Value]/100,  

    0)))))

To be used in  the following evaluatopm

Efficient Hours Per Week = IF(ISBLANK('SpaceData (Excel)'[Capacity]),0,('SpaceData (Excel)'[Capacity] * 40)* 'SpaceData (Excel)'[Efficiency]