Rear Window washer

My 96 Windstar has the rear window wiper blade and the washer fluid squirter on it... however... for the last few months, I can't get any washer fluid to come out of it. The reservoir is full... but I can't seem to find where the line runs that feeds that squirter. Anyone else experience this or know what I should look for in order to correct the problem?

The line is a black rubber tube that runs from underneath the washer fluid reservoir on the right sid eof the engine bay up and into the firewall. You may find it running alongside the feed tube for teh from washers-- that one will end in an elbow which connects to a rigid plastic line. From three, I can't tell you. But you may want to examine the visible portion for cuts and such... got one in that area myself, probably happened during maintenance when the cowling was removed.