Count rows based on filters

Hello,

Would like to count number of rows with the following conditions 

Duration >= 45 AND Percent Complete >= 1% where Tollgate Phase is Blank

Tried the following measure but doesn't seem to work (didn't add condition that tollgate phase should be blank)

#project with perc = CALCULATE(

COUNTROWS('Governance Dimesions'),

FILTER('Dimesions', 'Dimesions'[Schedule Duration] >= 45 || 'Dimesions'[Governance[PertentageCompletedActual]]] > 1 ))

 

anybody who knows how to manage?