The confirmed fact is a display correction
The 0.20.12 announcement says the character sheet showed an incorrect stat cap for Target Amount. It records a correction to that display. It does not state the corrected number in the retained passage. Giving an exact cap here would therefore be an invention.
Do not substitute a neighboring statistic
Other announcements discuss Projectile Amount, Projectile Pierce and Chained Attack Steps. The presence of those names does not establish that they are synonyms for Target Amount. Version 0.19.5 specifically renames Chained Targets to Chained Attack Steps, which is a separate recorded change. A full mapping between these statistics and each ability remains 待确认.
What is missing for a usable mechanical answer
The supplied evidence lacks the full current Target Amount guide entry and examples showing how it applies to specific abilities. It also lacks a verified rule for rounding, fractional values or abilities that ignore the stat. Those are the details needed to answer the player's question properly. This page stays marked incomplete and excluded from indexing rather than claiming that a cap-display fix explains the entire mechanic.