wix - upgrade multi instace web application installer -


can upgrade multi instance web application installer?

i achieve multiinstance web application deployment, when changed productversion since productcode (guid) remains same in other instances getting following error in log:

msinewinstance requires new instance not installed.

followed below link multi instance: http://ysdevlog.blogspot.in/2011/08/revisited-multiple-instance.html

<instancetransforms property="instanceid">   <instance id="i00" productcode="{guid-here-4e6d-b26b-aa7eafaf526b}" productname="telstrat"/>   <instance id="i01" productcode="{guid-here-45a9-a703-5f01fe83380f}" productname="telstrat1"/>   <instance id="i02" productcode="{guid-here-471e-9a00-8756c12f358f}" productname="telstrat2"/> </instancetransforms> 

the productcode must updated able major upgrades. need update productcode in multi-instance transforms.


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