SIR BOBBY ROBSON last night warned that Newcastle can't afford a repeat of their "insipid'' first-half performance against Valerenga at St. James' Park last night.

Substitute Shola Ameobi, a half-time replacement for hamstring victim Craig Bellamy, confirmed the Magpies' place in the last 16 of the UEFA Cup - the draw for which is in Nyon, Switzerland at 1pm today - along with the likes of Valencia, Roma, Inter Milan and Galatasaray.

Ameobi struck at the start and the end of the second period after Alan Shearer's opener had been countered by centre-back Erik Hagen.

Robson, whose side reached the last 16 of the Champions League a year ago, said: "I thought we'd learned a lot last season - but it didn't look like that the way we played in the first half here.

"We can't be semi-insipid like that; we can't put on a performance like that in the next round. We've had a warning because whoever we play next might be too good for us.''

Robson questioned his side's "attitude'' in the first half. "It was the opposite of the game in Valerenga,'' said Robson.

"We were nervous here and I couldn't understand it. I said before the game that we weren't playing 11 dustbins - and they were better than us in the first half.

"We weren't as tenacious as they were. At half-time, I changed the attitude and we fought for the ball and played more like we know we can.

"What annoyed me was the gigantic mistake which allowed their player to volley in from a corner.

"But we improved dramatically in the second half. In the first half we were playing to go out and in the second half we were playing to stay in.''

Robson confirmed that Bellamy will undergo a scan to learn the extent of his injury. "We don't know how bad it is, but we will have a scan,'' said Robson. "That's our third hamstring injury in a week with Kieron Dyer and Darren Ambrose."

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