要更新 SSIS 脚本任务变量，该变量应设置为读/写"变量.

For an SSIS Script task variable to be updated, the variable should be set up as 'Read/Write' variable.

将您的变量添加到 ReadWriteVariables 并检查.

Add your variable to ReadWriteVariables and check.

您应该能够看到官方 docs 以及.

You should be able to see the official docs as well.

由用户提供给包以进行读/写访问的现有变量的逗号分隔列表.

The comma-delimited list of existing variables made available to the package by the user for read/write access.