Clock stops when lockscreen, ActivityStarter workaround with com.android.deskclock

The activity starter component is not able to pass nuneric or boolean values, only strings...

As already suggested earlier, try the activity starter extension... it has been updated recently, see here

And if you still do not have luck..., the paid version of the alarm extension can already do what you need... .

Question to ask yourself: why would someone spend valuable time to develop an extension, if it could be done without extension?

Taifun