Rangers face Celtic in the Scottish Cup semi-final this weekend.
The Gers have a distinct way of playing under the former Brentford boss which has undoubtedly helped their cause in winning the first division title and securing promotion back to the Premiership.
However, an open and expansive game against the likes of Dumbarton may not be the best way to go against a Celtic side who many consider as the current best team in Scotland.
However Dalglish has urged the Ibrox club to stick to their principles against the Hoops as he feels not playing to their strengths could have an adverse effect at Hampden Park this weekend.
“I don't think they should change their principles just because they are playing Celtic. That is the way they play and they have got to play to their strengths,” Dalglish told the Daily Mail.
”Why would the change it? If it's not good enough, it's not good enough.
“They are giving themselves less of a chance of being successful if they go down a different route to the one they've been down all season.”
Rangers have been very easy on the eye for much of their promotion-winning campaign, scoring an abundance of goals and looking to play the ball out from the back at any given opportunity.
But while they regularly dominate possession in the first division, they could be forced to concede the lion’s share of the ball to Celtic this weekend as the Hoops will seek to assert their dominance.
The Scottish Cup semi-final is set up to be a fascinating encounter, and many are expecting a much closer contest than Celtic’s comfortable 2-0 win last season in the semi-final of the League Cup.