[Swarm-Support] Sending parameters via message: m()

[James Keirstead]

Hi,

I'm just beginning with SWARM and seem to be having trouble with some
basic syntax issues.  I've searched the web but can't seem to find
anything on the most basic question - such as:

1) How do I send parameters via message: m()?

In buildActions of ModelSwarm.m I've got this code excerpt and I want to
pass parameters for getDistance X and Y.

  modelSchedule = [Schedule createBegin: self];
  [modelSchedule setRepeatInterval: 1];
  modelSchedule = [modelSchedule createEnd];
 [modelSchedule at: 0 createActionTo: aCustomer message:
M(getDistanceX:Y:)];

This will compile and run, granted with garbage numbers since I don't
actually pass anything to getDistance.  I've seen reference to
[modelSchedule ... message: M(getDistanceX:Y):20:30]; but I get errors
with that syntax.

2) How do I refer to the properties of an object?  I've tried
aCustomer.xPos, where aCustomer is a Swarm Object called Customer with
an internal variable called xPos, but get "request for member 'xPos' in
something not a structure or union".

Thanks for your help

Cheers,
James Keirstead