Multi-line Calendar expression not rendering prope

'{c1b} ' .. (string.sub('{c1t} ',1,15)) .. '\n'..
'{c2b} ' .. (string.sub('{c2t} ',1,15)) .. '\n'..
'{c3b} ' .. (string.sub('{c3t} ',1,15)) .. '\n'..
'{c4b} ' .. (string.sub('{c4t} ',1,15))

Cuts off after the third calendar event time. If I use a separate object for each line, it renders every time.