XML App - choice box and text input with DIAL

[sholinaty]

I have some complex dialing codes in use on my PBX for selecting outbound caller ID.
we are trying to run this on a mitel/avaya 6869i

my goal is to have an XML app, loaded by a softkey, with:

1.   Selection box / pick list of { label:Value, label:value, label:value}
2.  numeric input (the number you want to call)
3. softkey that Dials.

ideally, the dial button would dial:  the value from the selection box and the phone number, or
*123 18008675309

However even just trying to get basic dialing working, no luck...

Code: [Select]

<AastraIPPhoneInputScreen
 type = "number">
 <Title>Dialing Test</Title>
 <Prompt>Enter a number</Prompt>
<parameter></parameter>
 <Default></Default>
<url></url>
<Softkey index = "1">
 <Label>Dial</Label>
 <URI>Softkey:Dial</URI>
</Softkey>
<Softkey index = "2">
 <Label>Exit</Label>
 <URI>Softkey:Exit</URI>
</Softkey>
</AastraIPPhoneInputScreen>

The above does not dial Anything... hoping for some help.