(How) Can I access a method existing in my FormApp which is hosting a PSHost from within a cmdlet?

Hello,

I would like to implement a form application which is hosting a PSHost and executes own cmdlets. As far as this it is no Problem.

But my form is using also other dlls and has instanciated objects from these dlls. Now I would like to access this methods from within my cmdlets. 

How can this be done?

I will try to explain it with the following code snippets.

First the code implementing the form which is running the PSHost.

namespace MyApp
{
  class MyAppForm
  {
    MyObject obj = new MyObject();  // this is the object I want to access later
    PSHost pshost = new PSHost();
    Runspace space;
    space = RunspaceFactory.CreateRunspace(pshost);
    space.Open();

    Pipeline pipeline = space.CreatePipeline(<myCmdlet>);
    Collection<PSObject> results = pipeline.Invoke();
  }
}

And here is the cmdlet were I would like to access a method from within my form app.

namespace MyCmdlets
{
  [Cmdlet(VerbsCommon.Verb, "Noun")]
  public class Verb_Noun : Cmdlet
  // parameters
  // overrides
  protected override void BeginProcessing()
  {
     // how can I get access to <obj> here? 
  }
}

Thanks

Alex