error data modify ~ ~ ~

Moving data with relative coordinates does not work ~ ~ ~

Example doesn't work: data modify entity @n[type=minecraft:text_display] text set value '[{"nbt":"text","entity":"@s","interpret":true},{"block":"~ ~ ~","nbt":"Book.components.minecraft:writable_book_content.pages[0].raw"}]'

Example works: data modify entity @n[type=minecraft:text_display] text set value '[{"nbt":"text","entity":"@s","interpret":true},{"block":"29 51 15","nbt":"Book.components.minecraft:writable_book_content.pages[0].raw"}]'

This outputs the correct data: tellraw @p [{"block":"~ ~ ~","nbt":"Book.components.minecraft:writable_book_content.pages[0].raw"}]