Displaying rows of data, PluggableMultiColumnListMorph

Hello,

i want to display the results of an ongoing calculation. I'm not terribly concerned about speed, as this is just for educational purposes.
So i figured that PluggableMultiColumnListMorph would be a good place to start.
My problem now is, that it only wants to take Arrays as its source list. Because i don't know how many rows of data need to be displayed, i just threw all of them in an OrderedCollection. 
If i convert this OrderedCollection with "asArray" and feed it to the MultiColoumnMorph the contents are displayed just fine, but i can't select any entries or navigate using the arrow keys.
In fact, i can only select as much entries as there are columns in the Morph.

To illustrate, i did something roughly similiar to the following:

|column1 column2|
    result := OrderedCollection new.
    column1 := OrderedCollection new.
    column2 := OrderedCollection new. 
    column1 add: 'x-component'; add: 'purz'; add: 'durst'; add: 'puh'.
    column2 add: 'y-component'; add: 'purz1'; add: 'durst1'; add: 'puh1'.
    result add: (column1 asArray); add: (column2 asArray).
    result := result asArray.

And it seems like PluggableMultiColumnListMorph doesn't treat "result" as a proper array.
Is there a possible workaround or do i absolutely have to work with simple arrays?
Or is there an even better way to display rows and columns of data?

Thanks in advance,
Peter Schneider
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