Does a trial court abuse its discretion in concluding that a plaintiff can no longer plead a valid cause of action against Respondent?

deficiencies in appellants' complaints, yet appellants' amendments continuously failed to cure these deficiencies. Under these circumstances, the trial court did not abuse its discretion in concluding that, after having already had "four opportunities to plead a valid [cause of action] against [respondent]," appellants had "no reasonable possibility" of doing so through yet another amendment. (See, e.g., Wilson v. Loew's Inc. (1956) 142 Cal.App.2d 183, 196.)