Runner.CallMethod not working when passing function name as param from spreadsheet

ACTUAL CALLING ROUTINE:

function tester(){
tcInfo =[0,0,"TC333_VERIFY","TC_EXPT","TC_ACTUAL","NULL"]
tcData =[0,0,"TC333","ABC"]
verificationManager(tcInfo,tcData)
}

IMPLEMENTATION CLASSES

function verificationManager(tcInfo,tcData)
{
try
{
var ResultParam = Runner.CallMethod(_impl_verificationManager,tcInfo,tcData);

}
catch (e)
{
Log.Error("Error occured while executing 'verificationManager' and error description is:" + e.description);
}
finally
{
Log.Message(ResultParam+"--------------"+ tcInfo[3]+"--------------"+ tcInfo[4]+"--------------"+ tcInfo[5]);
}
}

function _impl_verificationManager(tcInfo,tcData ){
var C = eval(tcInfo[3]+ "(" + tcData + ")" )
return C
}

function TC333_VERIFY(K){
Log.Message(K)
return 1
}