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![ZBX-18675] The behavior of the strlen(#num) function does not match the documentation](https://support.zabbix.com/secure/attachment/119945/119945_3+Empty+values+%2B+non-empty+value.png "ZBX-18675] The behavior of the strlen(#num) function does not match the documentation")
ZBX-18675] The behavior of the strlen(#num) function does not match the documentation
