Do Sheetworkers listen for rolls?

I have a sheetworker that I want to listen for a hit location die roll. Is this possible?

Not possible.  Sheet workers can only react to sheet events, such as changing an attribute. Only API scripts can listen to chat events.

OK, so lets try this then. Will it read this if it changes <input type="hidden" name="attr_hitlocation_roll" value="[[3d6]]" disabled="disabled"/>

After this button is pressed <button type="roll" name="attr_weaponroll" value="&{template:GURPS} {{roll= @{core_roll} }} @{vs} {{target= [[@{skill} + @{modifier}]] }} {{attack_type=@{name}}} {{rollname=ATTACK}} {{damagetype=@{type} }} {{woundmod=@{wound_modifier} }} {{damageroll=[[@{damage}]]}} {{crit_hit= [[ @{critical_hit_roll} ]] }} {{crit-head= [[@{critical_head_roll} ]] }} {{crit_miss= [[ @{critical_miss_roll} ]] }} {{charactername=@{character_name}}}" />

It will only react to changes on attributes. Rolls can’t change attributes and so won’t cause the event. 

OK, I am just trying to workaround my lack of scripting knowledge.

No worries. =D