Unfortunately that won't work. You are actually trying to do boolean logic on items that aren't boolean, so you will be evaluating ( ZTD || xx1 || xx2 || xx3 || xx4 ) first before you compare that to #findtype. And since ZTD, xx1-4 aren't booleans, this will always be false. The better way to do it would be:
if #findtype in ZTD_xx1_xx2_xx3_xx4