Changing Dyanmic Data Displayed in Bubble Dropdown

I have a dropdown that displays data that I have created as its own Type, called “LC”.

I want to have it so that there are two buttons, and when one button is clicked, “Junior Cert”, the data that is displayed in the dropdown is the data type “JC”, and when “Leaving Cert” is clicked, the data displayed is “LC”.

Can anyone help here? I can’t figure it out at all.

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