Mongod custom activity issue

i build a csharp custom activity for mongod and import in UiPath studio but when i tried to run i got error

ERROR Validation Error Cannot create unknown type ‘{clr-namespace:OZ.Transcript.MongoConnector.Activities;assembly=OZ.Transcript.MongoConnector.Activities}PolicyHolderExists’. database.xaml

can someone help me to fix the issue


As per error looks like it is unable to intialize the variable type you need

Is the custom activity tested?

And all the reuqired dependencies are added?