Using the msg.payload to change ui template

Dashboard
9 
[{"id":"8e1bd91f.0351b8","type":"inject","z":"60c4f4eb.03d874","name":"","topic":"dolly","payload":"hey","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":300,"y":240,"wires":[["5a85126b.bb1f34"]]},{"id":"5a85126b.bb1f34","type":"ui_template","z":"60c4f4eb.03d874","group":"6e5e2fd4.bea84","name":"","order":1,"width":"23","height":"23","format":"<!DOCTYPE
 html>\n\n<html>\n \n<body>\n<div 
ng-bind-html=\"msg.payload\"></div>\n<p>Image to 
use:</p>\n\n<img id=\"scream\" width=\"900\" 
height=\"800\"\nsrc=\"/route.png\" alt=\"The 
Scream\">\n\n<p>Canvas:</p>\n\n<canvas id=\"myCanvas\"
 width=\"1000\" height=\"950\"\nstyle=\"border:1px solid 
#d3d3d3;\">\n\n</canvas>\n<script>\nvar shawty = 
'hey'\nvar canvas = document.getElementById(\"myCanvas\")\nvar ctx = 
canvas.getContext(\"2d\")\nvar img = 
document.getElementById(\"scream\")\n\nctx.drawImage(img,0,0);\n\nif(shawty
 === \"hey\"){\n ctx.beginPath();\n ctx.arc(30,30,30,0,2*Math.PI);\n 
ctx.fillStyle = \"red\";\nctx.fill();\n ctx.stroke();\n}\n</script>\n</body>\n</html>","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":540,"y":160,"wires":[["b283a520.d76fe"]]},{"id":"b283a520.d76fe","type":"debug","z":"60c4f4eb.03d874","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":810,"y":220,"wires":[]},{"id":"6e5e2fd4.bea84","type":"ui_group","z":"","name":"Route","tab":"f540ef38.3110e","disp":true,"width":"23","collapse":false},{"id": "f540ef38.3110e","type":"ui_tab","z":"","name":"Route","icon":"dashboard","order":2}]