Hi, in edgeR how can I write the FDR values to DE file?

et <- exactTest(dgelist)
fdr <- p.adjust(et$table$PValue, method="BH")

I know exactTest doesnt produce FDR values but with fdr <- p.adjust(et$table$PValue, method="BH") i think i am calculating fdr values but how can I include them to DE file?

The documentation shows that you should use:

topTags(et)

The output not only includes FDR values but also ranks the genes in order of DE significance.