2-7 Hand 100-200 at the Bellagio

[karpov]

Yesterday I had the following hand. I wonder if you would play it in a different way. 4 players mixed games with chinese poker. Robert Mizrachi raise on the CO. I have
2345 on the B and 3B, Bobby Belander calls in the SB, Artoface falls in the BB. Mizrachi pat, I draw one and surprise a 7!!! Bobby draw 2. Bobby checks, Rob bets I call Bobby call. Second draw Rob pat and Bobby 2 again. Rob bet, I call and Bobby folds. 3 draw pat, pat. Rob bet I raised and he folds 87532. I ask to a very strong player about my play and he told me I should raise after the first draw. Any thoughts?