[feature] The only variable types constructed are enumerations and strings. We need a data type that can be selected from multiple sources, such as named list.

[riven-blade]

Is your feature request related to a problem? Please describe.
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Construct variables, enumeration types can only be selected individually

Describe the feature you'd like
[A clear and concise description of what you want to happen.]
I need a type that allows multiple selections

Describe alternatives you've considered
[A clear and concise description of any alternative solutions or features you've considered.]
I need a type that allows multiple selections

Additional context
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[lilianzhu]

we will assess it