From z_view can I call a Z FM, wherein I placed COMMIT WORK statement?

Hello,

I developed a custom WDA, wherein i have my_view_2, wherein I have On_Button_Action event handler methos, well

In this On_Button_Action, I am calling a custom FM, in this custom FM I am updating a custom table by using MODIFY and COMMIT WORK statements.

Pls. let me know

1) Is it OK/safe that Can I call a custom FM, wherein we have MODIFY & COMMIT WORK statements?

2) If not, pls. suggest that how can achieve my requirement?

Thank youi