Heatplot label_format does not work

[dana-obk]

Hello,

I am trying to produce a heatmap of DE genes using heatplot like below.

heatplot(ego,showCategory = 50,foldChange=geneList, label_format=200)

But the label_format has no effect on the output. What is the problem? Is it a bug and how to solve it? My problem is when the GO term name is long, the label on the axis is wrapped in 2-3 lines, while I want one single line, with wrap limit higher than the default 30.