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Random Forest model output - MSE available?


Hello all, 


I am trying to extract data from the model output of various predictive tools, but mainly Random Forest. 

After learning a bit of R, I can extract the IncNodePurity using the 'importance' call like so: <- read.Alteryx("#1")
the_obj <- unserializeObject(as.character($Object[1]))

the_summary <- summary(the_obj)
the_importance <- importance(the_obj)

write.Alteryx(, 1, TRUE)
write.Alteryx(, 2, TRUE)

Importance gives the Node Purity but MSE is more accurate and I would prefer to output this instead. Only, I can't find a reliable way to call %IncMSE from the R tool. Does anyone know how to extract this, and more generally is there a place with comprehensive documentation of these? The 'Tool Mastery' pages are not detailed enough!


As a side note, It seems bizarre that the tools would output PNG of the data in the Reports but have a not have a formatted, tabular output as well. It would certainly save me some time. Is this in the pipeline?