Need help to scan stock making higher top higher bottom from last 2-3 months.

Here's another alternative to try (Mark_L's scan is great, just taking another approach):

[type = stock] AND [Daily SMA(20,Daily Volume) > 40000]

// lower price channel is still rising

and [Lower Price Chan(21) = max(21, Lower Price Chan(21))]

// test current month channels against prior month

// lowest upper price channel in last 21 days is better than the best of prior 21 days

and [min(21, Upper Price Chan(21)) > 21 days ago max(21, Upper Price Chan(21))]

// and same test of lower price channel

and [min(21, Lower Price Chan(21)) > 21 days ago max(21, Lower Price Chan(21))]

//************if you want, same tests for second month versus third month
//and [21 days ago min(21, Upper Price Chan(21)) > 42 days ago max(21, Upper Price Chan(21))]

//and [21 days ago min(21, Lower Price Chan(21)) > 42 days ago max(21, Lower Price Chan(21))]

The test of the most recent two months gets a reasonable number of hits that look pretty good. Adding the third month gets no hits, so I left it in but commented it out. Those lines might be useful in a different market.

You could play with the 21 day parameter to see if it makes a difference.