This function is used to tell the RSPD that your module has found a given threshold has been crossed. The thresholdToSet string should contain the data returned by RSP_getThreshold. The forceAlert argument can be 0 or 1. If set to 1, this tells the RSPD that it should act as if the threshold has just crossed, even if it has in fact been crossed for some time. This may be necessary in cases where the threshold refers to multiple pieces of data. For example, imagine a general threshold which is crossed any time a site goes down. As multiple sites go down, the threshold stays crossed, but it may be necessary for more than one alert to be sent.