Limit maximum by other value

I like to limit Stamina Points ( HP ) to be able only to choose up to SP Max value, nothing more. Here is example I use:   <div class="sheet__stamina-points">    <h2>Stamina Points</h2><br />    <table>    <tr>    <td>   <label>Current</label></td>   <td><label>Max</label></td>   </tr> <tr>     <td>   <input class="input" type="number" name='attr_sp'></td>   <td><input class="input" type="number" name='attr_sp_max' ></td></tr>   </table><br/>    </div> Using line  <input class="input" type="number" name='attr_sp' max='attr_sp_max'> does not seems to limit values. :/

The only way to limit stats is by using a sheet worker. You can check if the value exceeds the max and reset it to max. on('change:sp', () => {     getAttrs(['sp','sp_max'], values => (         let current = parseInt(values.sp) || 0;         let max = parseInt(values.sp_max) || 0;         if(current > max) {                 setAttrs({                     sp: max                 });         }     }); });

It's weird, as I did limit max values simply by declarations on my other sheet, Werewolf the Forsaken one - in this direct section. <div class="sheet-col"> <h3>Health</h3> <div class="sheet-healthboxcontainer"> Max: <input type="number" name="attr_monhealthmax" min="1" max="30"> Now: <input type="number" name="attr_monhealth" min="0" max="attr_monhealthmax"> <br> <div class="sheet-hbspace"> <input type="radio" class="sheet-healthbox sheet-empty" name="attr_monhealth1" value="0"> <span></span> <input type="radio" class="sheet-healthbox sheet-bash" name="attr_monhealth1" value="1"> <span></span> <input type="radio" class="sheet-healthbox sheet-leth" name="attr_monhealth1" value="2"> <span></span> <input type="radio" class="sheet-healthbox sheet-agg" name="attr_monhealth1" value="3"> <span></span> <input type="radio" class="sheet-healthbox sheet-blank" name="attr_monhealth1" value="4" checked="checked"> <span></span> </div>

You should test that again. the max property wont work in roll20. It might work if you are incrementing values using a spinner, but the player can just enter any value they want in the input box.