How to make the variable textboxes on the homepage “Forced Both Aligned”?

Variables cannot be changed with the text using a text box.
Can't use brace alignment?

In general, we will stretch the variable text box to stop the text content from being too long.

But sometimes, I want to use the forced both alignment feature, and the auto brace feature.

It's strange.
The variable textboxes on the homepage don't use “Align at both ends”.
Nor can you use the frame's “Height and Width Autochange”.

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It's not an unusual need. I get it all the time.
For example, I want Pinyin to automatically scatter align the Chinese characters on the previous line