Is there any place where the strategy performance chart widgets API is fully explained? Or any browser tool available to configure them?

I have these 2 links but I can't get them working with other products by changing the IDs.

http://widgets.myfxbook.com/custom-widget?id=1807660&width=450&height=270&bart=0&linet=0&bgColor=E7F2FC&gridColor=BDBDBD&lineColor=7994AE&fontColor=525252&title=&titles=12&chartbgc=FFFFFF&magic=-1&equityColor=5b646d

https://www.myfxbook.com/api/get-custom-widget.png?session=DSL07vu14QxHWErTIAFrH40&id=1380117&width=600&height=400&bart=1&linet=0&bgColor=000000&gridColor=BDBDBD&lineColor=00CB05&barColor=FF8D0A&fontColor=FFFFFF&title&titles=20&chartbgc=474747

What am I doing wrong?