Change Twitter text share

Hi folks, I wanna know if possible change the text who appears at Twitter sharing.

The default is the page title but I need a custom variable per page.

The plugin uses the original post url with param &share=twitter, when user open this url, automatic redirects to the twitter website.

but I can’t find where this redirect is made and how I can modify any param.

Any helps?

https://www.ads-software.com/extend/plugins/sharedaddy/