Multiple repeats and multiple endings

[pdxdjazz]

For help with a chart, always post your chart (iRp format) along with your request so folks can take a look at it in the editor.

As you discovered, indicating multiple repeats using text (4x etc.) within repeat brackets does not work with a 1st ending.
You can remove the 1st/2nd ending indications, make the last 4 a coda, and use 4x as in the example chart (set player to 2x) or instead adjust the number of repeats using the player repeat setting as explained in the chart.

16 Bars 4x then with different Last 4 at end - Example

)BOB ('s your uncle...)