This functionality is only available for certain module packages.

updateParameterValue

Updates the value of the parameter with the stated absolute path in all existing projects.

updateParameterValue(String parameterAbsPath, Object parameterValue)
Argument String instanceAbsPath Absolute path to the project component.
Object parameterValue New value of the parameter.
Return value Boolean true = at least one parameter value has been updated.
false = no parameter value has been updated.