It would be nice to be able to loop through the multichoice parameter type, since the values are already stored in a string array. Example:
PlasterManifest.xml:
<parameters>
<parameter name='Regions' type='multichoice' store='string' prompt='Select regions'>
<choice label="Europe"
value="Europe"/>
<choice label="Asia"
value="Asia"/>
</parameter>
</parameters>
<content>
<file source='' destination='${Plaster_PARAM_Regions}\build.ps1' />
</content>
If both were selected, would create:
Europe\build.ps1
Asia\build.ps1