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    Bug 
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    Resolution: Done
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    P1: Critical 
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    5.3.0
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    None
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    Qt 5.3.0 master 63890f78d0bea816ee2de4a9a26311d6c9c1566a
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        51ffc436cd4ded5838d8dc6569637e4dbb3bf1cf (qtdeclarative)
Run attached QML code example.
Expected result: When timer triggers property when evaluates to true, state "black" is activated.
Actual result: Property when evaluates to false, and the execution results in following errors:
file:///.../state_bug.qml:23:15: Unable to assign bool to [unknown property type] file:///.../state_bug.qml:23:15: Unable to assign QQuickRectangle_QML_0 to [unknown property type]