Custom caption position X, Y

Firstly, I want to thank the entire Kdenlive team for the excellent software. I have a limitation in Kdenlive’s custom position. Is there a way for me to display my subtitle other than in the pre-configured custom position of the combobox. Example: Put the position in Y: xxx. You could include new custom position field with location right. The person choosing the X, Y position where the caption will be displayed would be of great value, I say this because videos for TikTok need to be in a specific position that is not available in the custom position.

Thank you Felipe.