I'd like to include the ability for a user to add an argument to my roll template, the way the default roll template does. I have seen it in other sheets, but am not sure what coding I would need to include. My current check template looks like this:  <rolltemplate class="sheet-rolltemplate-pf_check">
    <div class="sheet-header_background"><div class="sheet-header">{{name}}</div></div>
        <div class="sheet-content_background">
            {{#check}}
            <div class="sheet-content"><span class="subheader">{{check}}</span></div>{{/check}}
            {{#init}}
            <div class="sheet-content"><span class="tcat">Initiative:</span> {{init}}</div>{{/init}}
            {{#spell_chk}}
            <div class="sheet-content"><span class="tcat">Successful if:</span> {{spell_chk}}</div>{{/spell_chk}}
            {{#skill_chk}}
            <div class="sheet-content"><span class="tcat">Result:</span> {{skill_chk}}</div>{{/skill_chk}}
            {{#caster_class}}
            <div class="sheet-content"><span class="tcat">Caster's Class/Lvl:</span> {{caster_class}}</div>{{/caster_class}}
            {{#caster_lvl_chk}}
            <div class="sheet-content"><span class="tcat">Caster Level Check:</span> {{caster_lvl_chk}}</div>{{/caster_lvl_chk}}
            {{#notes}}
            <div class="sheet-content"><span class="tcat">Notes:</span> {{notes}}</div>{{/notes}}
        </div>
    <div class="sheet-footer_background"><div class="sheet-footer">Starfinder©</div></div>
</rolltemplate>
 Any help would be great.  Edit: Added the following which gives a usable result (not quite the same as default):              {{#foo}}
            <div class="sheet-content"><span class="tcat"></span>{{foo}}</div>{{/foo}}
 I would still like to see some other alternatives.