Change Background Image On Object Value

[manos@dynamitec]

Hello Daniel.

I have done this and works but if I refresh the page the background image is lost. Is there a solution to this?

Code:

$(function(){
  if (typeof grp != 'undefined') {
    grp.listen('32/1/4', function(object, state) {
      var image = $('.hvac_image')[0]
      if (state == 'value') {
        if (object.value == 1) {image.innerHTML = '<img src="scada/resources/img/HVACFlowDiagram1.PNG?1569506491">';}
        else if (object.value == 2) {image.innerHTML = '<img src="scada/resources/img/HVACFlowDiagram2.PNG?1569506498">';}
        else if (object.value == 3) {image.innerHTML = '<img src="scada/resources/img/HVACFlowDiagram3.PNG?1569506503">';}
        else if (object.value == 4) {image.innerHTML = '<img src="scada/resources/img/HVACFlowDiagram4.PNG?1569506509">';}
        }
    });
  }
});

Thanks for your help.