BPM Code Calling Function/Tuple - Cannot convert type 'object[]' to. .

Kinetic ERP
4 
var result = (Tuple<int?, DateTime?>)(this.InvokeFunction(functionLibrary, functionName, Tuple.Create( today, leadDays, "STLMFG")));

Am I crazy? I’m still getting the "Cannot convert type ‘object[]’ to ‘System.Tuple<int?, System.DateTime?>’ - that is the correct data type return value from my function signature.