Matlab Simulink how to omit signal in some steps

I'm trying to segment the original signal using the DSP toolbox in Matlab Simulink. I'm using the Time scope to plot it. If the original signal has certain characteristics, I plot it. If not, I omit the signal segment. However, when I omit signals, the time scope stops the simulaiton entirely. What I want to plot is: original signal: seg good1|seg bad1|seg bad2|seg good2... filtered signal: seg good1|seg good2|seg good3... How to plot the filtered signal?