compile errors using LOG4CXX_DEBUG

Hello,

I get the following errors every time I use the LOG4CXX_DEBUG macro.

I use the following syntax:
LOG4CXX_DEBUG(logger, "Switching to tool " + (*m_currentTool)->name);

where 'logger' is defined in the class as:
static LoggerPtr logger;

This is the part of the build log I get for the line above:
error C2589: ',' : illegal token on right side of '::'
error C2143: syntax error : missing ')' before '::'
error C2661: 'log4cxx::Logger::forcedLog' : no overloaded function takes 0 arguments
error C2059: syntax error : ')'

Can anybody point me to what I am doing wrong and how I might prevent this error?

Best regards,
Jorrit