How do i make NPC rolls invisible to players in a roll template?

How do i make NPC rolls invisible to players in a roll template? Below is the button. <button type="roll" name="attr_attackroll" 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}}}" />

Put /w gm at the beginning of the roll.

<button type="roll" name="attr_attackroll" value="&{template:GURPS} /w gm {{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}}}" />

Or here <button type="roll" /w gm name="attr_attackroll" 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}}}" />

Here <button type="roll" name="attr_attackroll" value=" /w gm &{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}}}" />

How can I link that to these radio buttons to turn it on/off? <input type="radio" name="attr_charactertype" value="NPC" checked="true" /> <span class="sheet-popup">NPC</span> <span class="sheet-tooltip"> Non-Player Character </span> <br /> <input type="radio" name="attr_charactertype" value="PC" /> <span class="sheet-popup">PC</span> <span class="sheet-tooltip"> Player Character </span>

My advice would be to create another attribute, wtype , and allow the user to set this to whisper (/w gm ) or public (no value). This is how most sheets handle this scenario. Then your button would become: <button type="roll" name="attr_attackroll" value="@{wtype}&{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}}}" />

So does this do it? <div class="sheet-box"> <input type="radio" name="attr_charactertype" value="/w gm" checked="true" /> <span class="sheet-popup">NPC</span> <span class="sheet-tooltip"> Non-Player Character </span> <br /> <input type="radio" name="attr_charactertype" value="" /> <span class="sheet-popup">PC</span> <span class="sheet-tooltip"> Player Character </span>     </div>

You could do that, but you lose other potential uses for charactertype.

I screwed that up.... I meant for charactertype to be wtype

Getting this from chat There was an error with your formula. Please try again.

<div class="sheet-box"> <input type="radio" name="attr_wtype" value="/w gm" checked="true" /> <span class="sheet-popup">NPC</span> <span class="sheet-tooltip"> Non-Player Character </span> <br /> <input type="radio" name="attr_wtype" value="" /> <span class="sheet-popup">PC</span> <span class="sheet-tooltip"> Player Character </span>     </div>

So it is probably in the button.