In the Bundle element, or a referenced fragment, use a Variable element and
use Override='yes'
<Variable Name='VariableName' Value='*' Type='string'
bal:Overridable='yes'/>
or
<Variable Name='VariableName' Value='*' Type='numeric'
bal:Overridable='yes'/>
For control logic in InstallCondition I prefer numeric, but if the variable
is to be passed to MsiProperty use a string.
In the mba, in OnDetectComplete (or wherever you want after Burn initializes
the variables)
if (myapp.Model.Engine.StringVariables.Contains("VariableName")
&& e.PackageId.Equals(myapp.Model.Engine.StringVariables["VariableName"],
StringComparison.Ordinal))
{
myapp.Model.Engine.StringVariables["VariableName"] = "some
string";
}
(or use Engine.NumericVariables
In installCondition'=" VariableName = 1" (if numeric or use quotes around
a string).
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