Contact Center Variables | Is it possible to create complex variables or array variables in ZOOM CC?

Suppose I have a banking client, I am fetching data from database using the customer ID provided to me by the customer and I wish to shore all that information from database into a complex variable or Array type variable where it is stored as a group. Is it possible to do that? If yes, how?

Currently what I am aware of is that, all the flow related variables are stored in Contact Center Management > Preferences > Variables > (under Custom Variable Group) “the variable group that I created for that particular flow”

Inside that Variable group when I create a variable I am presented with the following datatype options:
String/ Number/ Boolean/ Date/ Time/ Currency/ Percentage/ Email/ URL/ Phone

is it not possible to create complex variables/ Arrays in Zoom??