From OpenSCADAWiki
After enabling the page you are ready to set links to the early created parameters of the controllers. To do this, without leaving the dialog of the properties edition of the newly created page (Fig.5.1.3), click on the tab "Links" (Fig.5.1.4). On this tab we can see a tree with the elements "el1" ... "el8". Expand any of the element we'll see the branch "Parameter" and exactly in it we have to specify or choose the address of our attributes "Ti" and "To". In general we fill out four elements and during this part of the properties you must specify as constants:
- "name" — "val:AT101_1 Ti";
- "ed" — "val:deg.C";
- "max" — "val:150" (for Ti) and "val:100" (for To);
- "min" — "val:0".