How to Run already existing Action from a relationship

Hello Angelalp

Im still getting error i added my code in your code below is that 

The action basically help triggers a workflow on an action, It works fine when i do it on an item type but it has issues when i do it on a relationship grid

Innovator inn = this.getInnovator();
Aras.IOM.Innovator innovator = this.getInnovator();
// var myId;
// var myItem;
// Determine if Action was called from main grid or relationship grid
var relatedId = this.getProperty("related_id","");

// relatedId only exists when Action is called from relationship grid
if (relatedId)
{
var myId = relatedId;
var myItem = this.getPropertyItem("related_id");
}
else
{
var myId = this.getID();
var lytem = this;
}

string workflowMapName = "VSY Task";
Item workflowMap = innovator.getItemByKeyedName("Workflow Map", workflowMapName);
if ((workflowMap == null) | (workflowMap.getID().Length != 32))
{
return innovator.newError("Unable to retrieve Workflow Map '" + workflowMapName + "'");
}
// Instantiate and start the workflow.
Item workflow = this.instantiateWorkflow(workflowMap.getID());
if (workflow.isError())
{
return innovator.newError("Error instantiating workflow: " + workflow.getErrorDetail());
}
workflow.startWorkflow();
return this;