Thingspeak chart printing problem- ethernet shield website

Hello im trying to put thingspeak chart on my website which is on local ethernet shield connected to my arduino. Whole website is on made on my sketch. How can i print it in html website trough arduino? I tried doing:
"client.println(".
But this doesnt work, gives me errors. I hope u can help me. Below is my thingspeak chart html link.

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/509100/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&results=60&type=line&update=15"></iframe>

But this doesnt work, gives me errors.

What is "it" that gives you errors? What errors?