need help with DAX

I found a solution. In case it would help anybody, here are 2 ways: _resulteTESTNEW and test12:

test EOH =

VAR selected_dim1 = SELECTEDVALUE('Var. Dims 1'[Var. Dims 1 Felder])

VAR selected_dim2 = SELECTEDVALUE('Var. Dims 2'[Var. Dims 2 Felder])

VAR selected_dim3 = SELECTEDVALUE('Var. Dims 3'[Var. Dims 3 Felder])

var _resultTESTNEW = IF(((selected_dim3 = "'Full Price Flag'[Full Price Flag Description]"||

            selected_dim2 = "'Full Price Flag'[Full Price Flag Description]"||

            selected_dim1 = "'Full Price Flag'[Full Price Flag Description]")&&ISINSCOPE('Full Price Flag'[Full Price Flag Description]))||

            ((selected_dim3 = "'Full Price Flag'[Full Price_Markdown Flag]"||

            selected_dim2 = "'Full Price Flag'[Full Price_Markdown Flag]"||

            selected_dim1 = "'Full Price Flag'[Full Price_Markdown Flag]")&&ISINSCOPE('Full Price Flag'[Full Price_Markdown Flag])),"",[EOH])

VAR test12=

               IF((SUMX( 'Var. Dims 1', [Var. Dims 1 Reihenfolge] ) in { 9, 10 }  || SUMX( 'Var. Dims 2', [Var. Dims 2 Reihenfolge] ) in { 9, 10 }  || SUMX( 'Var. Dims 3', [Var. Dims 3 Reihenfolge] ) in { 9, 10 })&&(ISINSCOPE('Full Price Flag'[Full Price Flag Description])||ISINSCOPE('Full Price Flag'[Full Price_Markdown Flag]))

         ,"",

[EOH])

RETURN test12