Newly created variables can only be selected via a selection bottum (here: magic number). For all other selection buttons, no or only two variables are displayed for selection. In total, 6 variables were created. 10 variable contains the EA.
The selection buttons not and only very limited work I have already on 08. Oct. in 2018 communicated :
see also:
https://roadmap.strategyquant.com/tasks/algw_0101