'beginCapture' is not effect when 'or'

[pettything]

VerEx().beginCapture().find('http').or('ftp').endCapture().then(':')
i want result like /((http|ftp):)/ but /(http|ftp:)/
why?

[pettything]

I replace by
VerEx().beginCapture().find('http').add('|').find('ftp').endCapture().then(':')