Is there a way to limit Character count of String type in user macros?

[alana fernando]

I want to limit Character count of String input type in a user macro i am creating. Is there a way to do this?

thank you in-advance for your time and attention. 

[Stephen Deutsch · Accepted solution]

How is the string getting input? Do you mean in the macro options or do you have a text box on the page?

[alana fernando]

through Macro options

[Stephen Deutsch]

Unfortunately there doesn't seem to be any way to limit the macro options, but you could introduce an error message in the macro itself if the input is too long.

[alana fernando]

Is there a known code to display an error message? 

[Stephen Deutsch]

You could probably do something like this:

#if ($paraminput.length() > 10)
<div class="aui-message aui-message-error">
 <p class="title">
 <strong>Error</strong>
 </p>
 <p>Macro parameter "input" must be 10 characters or less!</p>
</div>
#else
    ... rest of code ...
#end

This example is taken from AUI, the Atlassian User Interface guidelines:

https://docs.atlassian.com/aui/7.6.2/docs/messages.html

[alana fernando]

Thanks @Stephen Deutsch