yaml parse hex data error

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I have a yaml file like this:

info:
    id: 0x120

when i loaded the param in my cpp, i define a uint32_t variable id and set it based on the yaml file:

uint32_t id;
ros::param::get("/info/id", id);

when compile the project , the following errors occured: anyone can help me ,tks very much.

/home/888/xxx.cpp:64:69: error: no matching function for call to ‘get(const char [39], uint32_t&)’
     ros::param::get("/info/id", id_);
                                                                     ^
In file included from /opt/ros/melodic/include/ros/ros.h:54:0,
                 from /home/888/xxx.cpp:7: