QlikView crashed after trying add Dimesion via Properties

[#1]

I've made extension with such Definition.xml:

<?xml version="1.0" encoding="utf-8"?>

<ExtensionObject Label="Map widget" Description="Map widget" PageHeight="50000">

    <Dimension Multiple="" Label="Dimensions:" TargetName="Dimension" Initial=""/>

    <Expression Multiple="" Label="Expressions:" TargetName="Expression" Initial="" />

    <Initiate Name="Chart.Title" value="Map" />

    <Initiate Name="Caption.Text" value="Map" />

</ExtensionObject>

When I try add some dimension via Properties dialog, it works so slow and finally QlikView crashed. Is there some way to defibe Dimensions and Measurements in Definition.xml and just never touch Properties dialog?