How execute a advance action at the end of slide?

Generally I will execute an advanced action that I need to run on exit through my go to next slide button. For example, I have a template with a custom table of contents I need to close every time someone exits a slide.  Instead of simply going to next slide just add your advanced actions before the next slide command and you are ok. If your advanced action is conditional just add the go to next slide command at the end of your on condition action as well as your ELSE actions. 

You can do this with JavaScript utilizing the CPAPI_VARIABLEVALUECHANGED event listener while monitoring the cpInfoCurrentFrame variable.

The advanced action needs to be attached to some object to work. I created an invisible smartshape named "action_1" where the number indicates the slide number. make it 4x4 pixels, double-click, put it in a corner or the slide, no hand cursor.

You can then put one on any slide you need to use it by attaching an advanced action and changing the numberin the name to match the current slide, i.e. "action_2", "action_10"

This script will need to be put in the head of the index.html.

var interfaceObj, eventEmitterObj, slideEnterData;

window.addEventListener( 'moduleReadyEvent', function ( e )
{
interfaceObj = e.Data;
eventEmitterObj = interfaceObj.getEventEmitter();
initializeEventListeners();
});

function initializeEventListeners()
{ 
if ( interfaceObj )
{
  if ( eventEmitterObj )
  {
   eventEmitterObj.addEventListener( 'CPAPI_SLIDEENTER', function ( e )
   {        
    slideEnterData = e.Data;  
    eventEmitterObj.addEventListener( 'CPAPI_VARIABLEVALUECHANGED', runTimer, 'cpInfoCurrentFrame' );   
   });
  }
}
}

function runTimer( )
{
if ( window.cpInfoCurrentFrame == slideEnterData.to - 1 )
{
  cp.runJavascript( cp.model.data[ 'action_' + slideEnterData.slideNumber ].oca )
}
}

There is an On Exit event for slides, but I really do not recommend to use it unless you are totally sure that the last frame of that slide will always be visited, and after extensive testing. Have a look at:

Events and (advanced) Actions - Captivate blog

Personally I rarely use that event to trigger an advanced or shared action, especially for navigation I will prefer the On Enter event of the following slide. If you gave more details about which action you want to execute, could offer more recommendations.