Fix dynamic routes handler to use correct parameter names

[tushar5526]

Fixed #246

Check (put an 'x' between the square brackets) everything which applies:

• [x] I have added the issue number for which this pull request is created.

@Pavithratrdev, @kgashok please let me know about this update.

[tushar5526]

Found this bug on my localsetup and on sayThanks.io as mentioned in the issue #246