dear friend i have a problem on simulons application

dear freinds how i can connect those two blocs on simulink. + to + and - to -.

i remark that it can't be connected only if use sps to ssc bloc, however when i use this bloc the simulation will have some problems. it is any other solution for this? in the second figure connect 1 and 6 correspond to - and +. the third figure is for the second bloc and 1 is related to + and 2 to -. thank you