You may only save tool preset with one of these itmes. So for ex. 3 tool presets, one for one item, and then by a script load that one you need.
If you do so, Healing Brush Tool options will be set to those you saved it with, so nxt part of your script had to read what values were just chosen, what been stored by first part of script (that to choose appriopate tool preset). So it's going to immediatelly read those values and retrieve them.