Including static image does not work in R/exams

I tried to adapt the `Rlogo.Rmd` exercise from R/exams but the inclusion of the statitic image does not work. It does not appear in Moodle or HTML and I don't see what I am missing. The Rmd for my question is: ```{r, echo = FALSE, results = "hide", out.width = "20%"} exams::include_supplement("dominio8a.png",dir="C:/Users/user/Dropbox/ISCA/MQ/testes/exercicios") ``` Question ======== A figura \ ![a]("dominio8a.png") representa o seguinte conjunto de pontos do plano cartesiano: Answerlist ---------- * $\{(x,y)\in R^2\;:\; x^2+y^2\leq 9\}$ * $\{(x,y)\in R^2\;:\; x^2+y^2= 9 \}$ * $\{(x,y)\in R^2\;:\; x^2+y^2< 9 \}$ * $\{(x,y)\in R^2\;:\; x^2+y^2\geq 9\}$ Meta-information ================ exname: T5_04 extype: schoice exsolution: 1000 exshuffle: 4