qml file at startup

[ssimop]

I wonder whether the following option can work: Suppose that in $My QM$ there exists a very short maim.qml file, which - under certain circumstances - decides which one of another two (namely qm1.qml & qm2.qml) will be further called, loaded, executed. If not, is there another way to select at startup which .qml will be loaded? Any advice much appreciated.