Can I use if statements in ParameterisedFunctions.jl? Is there a work around?

[ChrisRackauckas]

Duplicate with a solution posted:

Replicating Matlab ode15s results in Julia

Does this work? using IfElse function diffeq(du,u,p,t) du[1] = IfElse.ifelse(u[1]>0, u[1]+10, u[1]) end