Create Object in QlikView for displaying Values of an array?

[#1]

Hello all,

at the moment i am working on a qlikview project, where the user can choose, which data to show in a pivot table.

He can choose different dimensions and expressions and can save these with a click in an array.
When he finished, i am putting these thing together with a macro and build a pivot table.

My problem: I have more than 1.000 different expressions, the user can put into the array.

How to display these data? I need a Qlikview Object, where you have on the one hand all possible expressions and on the other hand the choosen expressions. It should be possible to promote and demote single expressions and to add or remove them.

Something like shown in the picture beside.

How to get such an Object in Qlikview?

Can i buy an add-on to do that?

Thanks for your help.

[#2]

Any suggestions? Still found no solution for that...