Genesys Cloud - Main

How can I pass non-String variables (like a Boolean) between call flows? From what I understand about the Get and Set Participant Data actions, it's only possible to transfer Strings to other flows.
For example, we'll run an authentication module (which calls data from our CRM) in Flow1 which is our main IVR. Then if the caller needs to make a payment, we would put them into Flow2, but pass all the info we got during authentication from Flow1 into Flow2. The data we pull from the CRM has all kinds of different variables like String, Boolean, Currency, Integer, etc.

How can I pass non-String variables (like a Boolean) between call flows? From what I understand about the Get and Set Participant Data actions, it's only possible to transfer Strings to other flows.
For example, we'll run an authentication module (which calls data from our CRM) in Flow1 which is our main IVR. Then if the caller needs to make a payment, we would put them into Flow2, but pass all the info we got during authentication from Flow1 into Flow2. The data we pull from the CRM has all kinds of different variables like String, Boolean, Currency, Integer, etc.