Table - FilterType on Column not working

Hey folks,

filterType on Column is not working for me. Here is my code:

        <table:Column sortProperty="abc" filterProperty="abc" filterType="sap.ui.model.type.Integer">
          <table:label>
            <Label text="abc"></Label>
          </table:label>
          <table:template>
            <Label text="{modelName>abc}"></Label>
          </table:template>
        </table:Column>

abc is containing a number as a string e.g. "10". The values are showing in the table so the bindings are correct.

Sorting also works but it does not respect the Integer type. I still get a String like sorting so that the entry "6" shows after "10" for an ascending sort.

Please help!

BR

Chris