FPM - Add Custom Action - GeoMap - InitialPosition not working

Hi,

in the FPM Add Custom Action content in the GeoMap fragment there is a data binding for initialPosition property which is not working as expected. Initial position is always set to 0;0;0.

<core:FragmentDefinition
    xmlns:core="sap.ui.core"
    xmlns="sap.m"
    xmlns:macros="sap.fe.macros"
	xmlns:vbm="sap.ui.vbm"
>
<Dialog id="_IDGenDialog" title="Location">
    <VBox id="_IDGenVBox">
        <vbm:GeoMap
            id="Map"
            mapConfiguration='{
			"MapProvider": [{
					"name": "Openstreetmap",
					"copyright": "&lt;b&gt;&lt;a href=\"http://www.openstreetmap.org/copyright\"&gt;© openstreetmap&lt;/a&gt;&lt;/b&gt;",
					"Source": [{
						"id": "s1",
						"url": "http://a.tile.openstreetmap.org/{LOD}/{X}/{Y}.png"
					}, {
						"id": "s2",
						"url": "http://b.tile.openstreetmap.org/{LOD}/{X}/{Y}.png"
					}, {
						"id": "s3",
						"url": "http://c.tile.openstreetmap.org/{LOD}/{X}/{Y}.png"
				}]
			}],
			"MapLayerStacks": [{
				"name": "DEFAULT",
				"MapLayer": {
					"name": "layer1",
					"refMapProvider": "Openstreetmap",
					"opacity": "1",
					"colBkgnd": "RGB(255,255,255)"
				}
			}]
		}'
            refMapLayerStack="DEFAULT"
            initialZoom="10"
            initialPosition="{customer/pos}"
        >
            <vbm:Spots id="_IDGenSpots">
                <vbm:Spot id="_IDGenSpot"
                    position="{customer/pos}"
                    tooltip="{customer/name}"
                    type="Success"
                />
            </vbm:Spots>
        </vbm:GeoMap>
    </VBox>
	<endButton>
		<Button id="_IDGenButton" text="Close" press=".closeDialog" />
	</endButton>
</Dialog>
</core:FragmentDefinition>

UI5 Docs say InitialPosition can only be set during initialization. So i think it wont work with data binding.