Can a script return a value to a macro?

Is it possible to for a script to return a value to a macro or character ability? I want to write a truncate script that handles either negative or positive numbers since using just floor or ceiling is insufficient if you are expecting values with either negative or positive signs. If the value is positive and you use ceiling or if the number is negative and you use the floor then the number 1 too high. I want to be able to write a !trunc script that would have a simple logic test to check the sign of the number and then call the appropriate truncation function.

yes.. this is just something pretty much random code I plucked from one of my scripts setting an attribuite to "-" findObjs({ _type: "attribute", name: "CodeA3", _characterid: GM_Chronosid})[0].set({current: "-"});

That's setting the value of a known attribute. It's not a the same as returning a value which is then usable by the calling macro. What would happen if I wrote a script called !trunc that did <a href="https://gist.github.com/jarquafelmu/8129508" rel="nofollow">https://gist.github.com/jarquafelmu/8129508</a> And then called it by saying [[(!trunc 10/3) + 5]]

Nope, that does not work.

!trunc (10/3) + 5 You could do that...... no reason you can't do that. But its not going to process a API command as an inline result.

How do you write a result back to the chatbox? or the macro do you do document.write(value)?

You can do all the work in the API. Rather then writing a macro that rolls dice and grabs stuff from attributes etc.... just do it all in the API. There is nothing a macro can do that an API script cannot do... plus the API lets you do anything you want with JavaScript to process the results before send them to chat.

And you could.... take a macro "!roll 1d20 + @{selected|bar1}".... ...do something in API with Bar1 and send to the chat "/roll 1d20 + @{selected|bar1}"

How would I pull the value of @{selected|bar1} in the API?

Parse it out... If the selected bar1 value is 9.... the msg.content will be "!roll 1d20 + 9" if(msg.content.indexOf(' ') == -1){ var myMesssage = null; var myCommand = msg.content.substr(1, msg.content.length); }else{ var myCommand = msg.content.substr(1, msg.content.indexOf(' ') - 1); var myMesssage = msg.content.substr(msg.content.indexOf(' ') + 1); }; if(myMesssage !== null){ try{ var parts = myMesssage.toLowerCase().split(' '); sendChat('', parts[0], function(outs) {}); var diceRoll = parts[0]; }catch(e){ diceRoll = undefined; }; }else{ diceRoll = undefined; }; The above might have a error in it (didn't test it) but it should give you: Message sent, API command, and any valid dice rolls. Since you should know the format of the macro, that should be enough to work it all out. Or use.... " !attack @{selected|character_name}" You should know who sent the API command (msg.who), and you know what they want to do ("attack') and you now know the character_name of who they want to attack.