`$expand()` issue

[mattfidler]

library(rxode2et)
#> Warning: package 'rxode2et' was built under R version 4.3.3

ev <- et()
ev <- ev %>%
  et(id=1:10, amt=1:10, dosing.to=1, ii=14, addl=5, rate=(1:10)/(15/60/24), cmt=1)

ev$expand()
#>  [1] "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" ""
#> [26] "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" ""
#> [51] "" "" "" "" "" "" "" "" "" ""
#> Error in eval(expr, envir, enclos): 'lst[j]' needs to be a integer vector

^{Created on 2024-06-29 with reprex v2.1.0}