Problem with the html attribute

Hi webaware,

In my code I construct the shortcode to generate my Flexible map.
All is working fine except when i try to use some basic html in the “html” attribute. For example if i use :
<p>some standard text.</p> <p>An other paragraph</p>
the code is working fine, but if i add some little more html like this :
<p>Some colored text in <span style="color: #ff0000;">red</span>.</p> <p>And an other paragraph</p>
it doesn’t works anymore.

Do I miss something ?

TIA,

Amicably,

Pierre.

https://wordpress.org/plugins/wp-flexible-map/