Declaration: TParticles.Quantity[Partix, QIx: integer]: double;
The array property Quantity provides access to the array Quantity which allows to store up to 16 quantitative values per particle. The parameter Partix specifies the particle index (valid range: 1..NParticles), the parameter QIx defines the index of the quantity (valid range: 1..NQuantities).

By default the Quantity array is defined with zero columns (i.e. zero quantities). In order to utilize it you have to set the property NQuantities to the number of quantities to be used.

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