enrichPathway

[ale07alvarez]

Hi,
I'm running the enrichPathway function:
x<-enrichPathway(gene=df$name, organism = "fly", pvalueCutoff = 0.05,
pAdjustMethod = "BH", qvalueCutoff = 0.2, universe, minGSSize = 10,
maxGSSize = 500, readable = FALSE)
and I get the errro:
universe is not in character and will be ignored...
How is the universe parameter set, my understanding is that I don't have to pass any arguments but it seems that the genes that the background genes it is obtaining ( from where??) are are not in character format?

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