When we are in the WorkFlow we can call a webservice. Currently, we could only put 'global variable' as parameter of the webservice. It will be very helpfull to be able to put other type like 'Fixed value', arithmetics, indexes,... (like when we are in assignation box for exemple). Somes webservices needs a lot of parameters, most of time it's just a fix parameters like name, ect. When you have many and many parameters to put, it's long to have to declare each parameter as global variable for just put a fixed value, just in order to put it on the parameter of the webservice.