Help with making a sheet that rolls 2d6 take-the-lowest when you have 0 in an attribute

I'm writing a character sheet for a game called Bubblegum Wizards 2. It is feature complete, but it doesn't have roll buttons. The game's system has you roll a number of d6s equal to your attribute unless you have a 0 in that attribute, at which point it rolls 2d6 and you take the lower. I've heard this is done using Sheet Handler(?) but I'm not really a coder and don't have an easy time parsing the code. Could someone help me? I could post the sheet code but I'm not sure how to do that, I'm very green.

I think you'll need to use code (custom roll parsing to be precise) for that. That's very tricky - it's probably the hardest roll20 feature. You could do it with a macro asking how big the attribute is, and a query, like /roll ?{Attribute Score?| 0,2d6dh1| 1,1d6|, 2,2d6}

So, This is how I think I'd make a button that rolls a number of d6s equal to the Cool attribute. <input type="number" name="attr_cool_current" /> <button type="roll" value="[[@{cool_current)d6]]" name'roll_cool'>Roll Cool</button> But how would I insert this macro into my code? /roll ?{Attribute Score?| 0,2d6dh1| 1,1d6|, 2,2d6}

<button type="roll" value="[[?{Is Your Score 0?|Yes,2d6dh1|No,@{cool_current)d6}]]" name'roll_cool'>Roll Cool</button> This will ask people if their score is zero, and roll for that; otherwise it will roll the proper amount of dice. You probably want to put it in a rolltemplate, which might look like this: <button type="roll" value="&{template:default} {{name=Cool Roll}} {{[[?{Is Your Score 0?|Yes,2d6dh1|No,@{cool_current)d6}]]}}" name'roll_cool'>Roll Cool</button>

So, when I put the top version in as a button, it returns this: No attribute was found for @{Benihana "Bonus" Chock|cool_current)d6} SyntaxError: Expected "(", ".", "[", "abs(", "ceil(", "d", "floor(", "round(", "t", "{", [ |\t], [+|\-] or [0-9] but "?" found. Benihana is the name of the character. After correcting the ) to a } in the no clause, the second one worked, but it's a little clunky, hmm.. Is there a way to center the result within the box it's displayed in?

yes, but that will require a custom roll template

Sorry about that ) typo. Yes, there's a lot you can do to manipulate the layout, but as Scott says, this will require learning how to write a rolltemplate (and some knowledge of HTML and CSS).

No worries! I was about to post about the error before I noticed one of the }s looked a little too round. I do have some knowledge of HTML and CSS. Can you point me at any guides or anything?

Have I got a link for you! My site: <a href="https://cybersphere.me/roll20-sheet-author-master-list/" rel="nofollow">https://cybersphere.me/roll20-sheet-author-master-list/</a> HTML, CSS, and Javascript - how you need to write specifically for Roll20. Thats focussed on sheet authoring. If you are asking about more general stuff, the Roll20 Wiki is an invaluable resource.