thanks... that was helpful.
i was hoping to use IFRAME and it worked when i had "navigate to" and used the following reference.
"https://www.openstreetmap.org/export/embed.html?bbox=-6.55986785888672%2C53.30451849692477%2C-6.3619422912597665%2C53.39039261408828&layer=mapnik"
I had been using "display HTML string" and grabbing it previously from an ajax call. that works fine for HTML, but clearly was not liked for something like this.
thanks again for giving me the pointer.
R