How are actual values assigned to the program generator?

In the Visu-Template under PLC_PRG (PRG), there is already an example of how the first five actual values of program generator 1 actual values can be assigned.

// x stands for programmer 1-9. n stands for setpoint 1-30
stOem.astProgramGenerator[x].stIN.stProcessValues.arProcessValues[n] := realvariable;