metan - a replacement for dp(#) - how to set the number of decimal places in output?

Hello all,
I am using metan in Stata/SE 14.1.

Previously, there was an option dp(#) that allowed the user to specify the number of decimal places displayed for the effect size in the forest plot. This does not appear to work now, nor can i find an alternative in output_options or forest_plot_options.

For example:
metan percentage lcl ucl, by(group) xlab(0,20,40,60,80,100) dp(1)

returns:
r(198); "option dp() not allowed"


I see that as recently as June 2015 users of Stata 12.1 were still able to use dp(#) successfully.
http://www.statalist.org/forums/forum/general-stata-discussion/general/1299384-metan-command-risk-differences-with-whole-numbers

Am I doing something wrong? Have I missed something? Is there a work-around?

Thank you.