exception after setCompleteRedYellowGreenDef in sumo client c++ - c++

Question

I was trying to build up on the example sumo client server in c++ as in the link
http://sumo.dlr.de/wiki/TraCI/C%2B%2BTraCIAPI
I wrote a function to build a complete RedYellowGreenDef as in the function below:
std::vector<libsumo::TraCILogic> Client::buildCompletetrafficLogics(std::string tlID, int phaseIndex, int increaseVal)
{
std::vector<libsumo::TraCILogic> logics = trafficlights.getCompleteRedYellowGreenDefinition(tlID);
for (int i = 0; i < (int)logics.size(); ++i)
{
for (int j = 0; j < (int)logics[i].phases.size(); ++j)
{
if (logics[i].currentPhaseIndex = phaseIndex)
{
logics[i].phases[j].duration = logics[i].phases[j].duration + increaseVal; //increase duration by 5 seconds
logics[i].phases[j].duration2 = logics[i].phases[j].duration2+ increaseVal;
}
}
}
return logics;
}
I called this function in the main function as follows:
//increase duration of phase with index "PhaseIndex" by 5000ms
std::vector<libsumo::TraCILogic> logics = client.buildCompletetrafficLogics(*tlIt, phaseIndex,5000);
libsumo::TraCILogic logic = logics[0];
client.trafficlights.setCompleteRedYellowGreenDefinition(tlID, logic);
where tlID is a valid traffic light id, but I faced The following exception when I passed the built logic to setCompleteRedYellowGreenDefinition():
terminate called after throwing an instance of 'std::invalid_argument'
what(): Storage::writeUnsignedByte(): Invalid value, not in [0, 255]
Aborted (core dumped)
Could you help me to find the problem: why I got this exception and how to tackle it?