Need help with hiding rolls results if the value is empty

Hello,  I am working on a custom character sheet and wish to hide the roll result if there were no modifiers entered in the input field.  The button html is currently like this: <div class="example">     <input type="number" name="attr_modifier" value="" /> </div> <div class="dice-button">     <button type="roll" class="sheet-dice-icon" value="&{template:custom} {{name=@{character_name}}} {{r1=[[1d20+@{modifier}]]}} {{desc=@{desc}}}"></button> </div> And the roll template looks like this: <rolltemplate class="sheet-rolltemplate-custom">   ...         {{#dice}}         <div class="result-style">{{r1}}</div>     {{/dice}} </rolltemplate> Currently, even if the modifier attribute is empty, it still rolls 1d20 and displays the result because of how I structured {{r1}}. Would there be a better way to structure this? Or is there a JS to display div as none when the value is empty? Thanks in advance. 

The trick here is using Logic Helpers in Rolltemplates. You will need to do two things. First, add an inline roll that only contains your modifier, like this: value="&{template:custom} {{name=@{character_name}}} {{modifier=[[@{modifier}]]}} {{r1=[[1d20+@{modifier}]]}} {{desc=@{desc}}} Then if you want to show the roll when modifier is not = 0, you need to modify our rolltemplate: {{#dice}} {{#^rollTotal modifier 0}}<div class="result-style">{{r1}}</div>{{/^rollTotal modifier 0}}     {{/dice}} The ^ before rollTotal means NOT, so this is when modifier does not equal 0.

GiGs said: The trick here is using Logic Helpers in Rolltemplates. You will need to do two things. First, add an inline roll that only contains your modifier, like this: value="&{template:custom} {{name=@{character_name}}} {{modifier=[[@{modifier}]]}} {{r1=[[1d20+@{modifier}]]}} {{desc=@{desc}}} Then if you want to show the roll when modifier is not = 0, you need to modify our rolltemplate: {{#dice}} {{#^rollTotal modifier 0}}<div class="result-style">{{r1}}</div>{{/^rollTotal modifier 0}}     {{/dice}} The ^ before rollTotal means NOT, so this is when modifier does not equal 0. Thank you so much, GiGs! I really appreciate your help!