Dear Martin, Thanks for your fast reply. Sorry about the formatting of the previous email. I actually tested it before sending and it came fine when sending to my own account but when I send it to the r-help email address it seemed like the formatting got lost. I can actually send you the project of R I am working in because for this experiment I am only using the Contoso DWH testdata from Microsoft. The R project is too big to include in the attachment, so you can download it from my dropbox via this link: https://www.dropbox.com/s/lry1v7ka2env5xf/Example.RData?dl=0 I see I a made a small mistake in my description, so I will rewrite it shortly in steps: 1. ruleset <- apriori(sales, parameter=list(support=0.0005, confidence=0.1, minlen=2)) This gives 780379 rules. 2. inspect(subset(ruleset, subset=rhs %pin% "Product=")) 3. just inspect(ruleset) does work. When finishing displaying the 780379 rules, it also show me this message: Warning message: closing unused RODBC handle 1 If I understand the last part correctly, I should add Michael Hahsler's email address to the BCC. Otherwise, my apologies. Thanks again, Kim