int my .pro file , I add

folder_01.source = ../qml/qmlMap/
folder_01.target = ../qml/
DEPLOYMENTFOLDERS = folder_01
qtcAddDeployment()

I set the build directory "/home/zhuwt/Documents/qtproject/mapEditor-build-b/mapE"
but it copy the qml file in "/home/zhuwt/Documents/qtproject/mapEditor-build-b/"
so what 's the problem?