Declaration: TParticles.NQuantities: integer;
The readonly property NQuantities controls the number of user-defined quantity values which are stored along with each particle (valid range: 0..16). Please note that the user-defined quantities are solely under user-control, Epina ImageLab does not process them in any way (except for providing storage space for them and for loading and saving them from/to the disk).

Hint: In order to access the particles currently loaded in the particle editor you can use the pre-declared global variable PEData.