Holding the Value of a Multiple Select list on the Update form
Do you have any examples or suggestions on how I can do this - been searching the web to no avail!
$your_array_var = explode(", ", $row_YourRS['PropertyType']);
Once you do this you will then need to loop over this array for each entry in the list and compare the value of the option with values in this array. If the values match then you will need to add the selected="selected" attribute to that option.
This is a little custom and will require hand coding the loop and comparison.