VBA, ActiveXControls and Data Types

[Melpp]

I am collecting data through an ActiveXcontrol. The command I am using is 'ai = DataqSdk1.GetData'. This data is coming in as type 'variant'. I want to be able to manipulate this data (from counts to a pressure value), but I first need to convert its data type to double. I tried the following with no luck ' ai_a = CDbl(ai)'. Please help!