A man who robbed and stabbed a Good Samaritan who gave him $10 and a cup of coffee has failed to convince a state appeals court panel that his 11- to 22-year prison sentence is too harsh.

The Superior Court panel reached that conclusion concerning William J. Campbell's fate in an opinion Judge Mary Jane Bowes issued this week.

Campbell, now 52, committed his crime hours after the victim, Marshall Breedlove, showed him that act of kindness.

Investigators said Campbell, who was high on crack cocaine, conned his way into Breedlove's home in Erie by asking to use the bathroom. Once inside, Campbell pulled a knife, forced Breedlove onto a couch and demanded money. Breedlove suffered cuts to his hands in the ensuing struggle.

Bowes noted that Campbell pleaded guilty to charges of robbery, possessing an instrument of crime, theft and making terroristic threats. It was an open plea, so Campbell had no sentencing deal.

In his failed appeal to the state court, Campbell claimed the prison term imposed by Erie County Judge William R. Cunningham is "manifestly excessive." He insisted that Cunningham didn't give him enough credit for feeling remorse for his crime and for his cooperation with police and didn'r give enough weight to the fact that the victim's injuries weren't life-threatening.