Hi experts!
I made this:
ClearCollect(sequenceFROM, Sequence(CountRows(MyCollection),0,2));
ClearCollect(Sequence1, Sequence(400,50969200,1));
ClearCollect(MASTERLIST,{FROM: sequenceFROM, Value :Sequence1})
But I get this:

I need to achieve this:

Appreciate a lot your help!!