Need help to put gear shifter back together! My daughter has Shimano SL TX30 gears on her bike....I think they might be Tourney, from searches I've done. The gears on the right handlebar has a button to go down gears. I stupidly took it off the bike and opened it, with plans of changing the cable. Well couple bits of plastic popped out and I don't know how they go back in to be able to change gears with it. If you use either the lever or the button for changing gears it would make a clicking sound. I'm hoping someone might have a pic of the inside so I know where and how the pieces go back in.
Searched the Internet with no luck as yet.

Thanks in advance xox
Looking at Shimano Technical Docs there are these pages:

https://si.shimano.com/#/en/search/Keyword?name=sl%20tx30

https://si.shimano.com/pdfs/ev/EV-SL-TX30-2493.pdf

whether there's enough detail in that exploded image I don't know!

Is it the left or right hand shifter?
If its the right hand one , I have one you could have cheap (I'm in the UK)

Cheers