ACSUtils exposes its version as numeric constants and as a string. E.g. ACSUtils 1.8.0 will define the following constants:

#define ACSUTILS_VERSION_MAJOR 1
#define ACSUTILS_VERSION_MINOR 8
#define ACSUTILS_VERSION_PATCH 0

str ACSUtilsVersion()

Returns ACSUtils version as a string, e.g. “1.8.0”. This is a function instead of a constant because ACS doesn't support string constants.

print(s:"This mod is using ACSUtils ", s:ACSUtilsVersion());