How to put condition expression while doing registry search.

[radz1]

How to put condition expression while doing registry search.

I want to search registry only when IsPreviousVersionFootprintExist exist and LOGFOLDER variable is empty.
If LOGFOLDER variable is passed from the command line, we do not want to search the registry.

i tried condition as below but not working - can not parse.
Condition="IsPreviousVersionFootprintExist AND LOGFOLDER=''"

<util:RegistrySearch Id="IsPreVerFootprintExist" Variable="IsPreviousVersionFootprintExist" Root="HKCU" Key="Settings" Result="exists" Win64="no" />

<util:RegistrySearch Root="HKCU" Key="Settings" Result="value" Variable="LOGFOLDER" Win64="no" Format="raw" Value="KeylogFolder" Condition="IsPreviousVersionFootprintExist AND LOGFOLDER=''"/>

[robmen]

Burn does not automatically convert command-line arguments into Variables. Your BA needs to do that. If you use wixstdba then the bal:Overridable extension attribute can be used to convert command-line args to Variables