Need to change length of comment on outline

I want to change length of comments on outline but I don't know where I need to change.
I have checked admin page but there is no such thing.
Do I have to modify code?
Please see attached image.

If you go into the admin, each module that adds to the outline will have a setting for the amount of text to show.  For example, for the blog module, go to the admin and look under the settings for the blog module.

I am using blog module call "Ultimate blog" seems like it has problem so vendor is now fixing.
Thank you for your advice.

The default Blogs module has this hard-coded to 300 characters and this was subsequently inherited by the Ultimate Blogs. I have now updated the Ultimate Blogs mod but for those who have the default Blog module, see the fix below :

In modules\boonex\blogs\classes\BxBlogsModule.php

Find :

    'item_description' => strmaxtextlen($aItem['PostText'], 300),
 
Replace with :

    'item_description' =>  strmaxtextlen($aItem['PostText']),  (int)getParam('max_blog_preview')),