I'm wanting to add 1 or more trend lines (lfit?) to bar graph with 3 variables over month. Here's current graph code:

Code:
graph bar (asis) hemvol ischemicvol totvol if year == 2019, over(date, relabel(1 "January"
2 "February" 3 "March")) blabel(bar, size(small)) bar(1, color(maroon)) bar(2, color(navy))
bar(3, color(pink)) ytitle(, size(vsmall)) ylabel(0(10)120, labsize(tiny) angle(horizontal)
glcolor(gs14) gmax) ymtick(##2) legend(col(3) size(small)) graphregion(fcolor(gs14))
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input float(date hemvol ischemicvol totvol)
708 19 75  94
709 15 75  90
710 18 87 105
end
format %tmMonth_CCYY date
Array

Any ideas or fixes?

Side issue: date labels generate as 708, etc forcing the code for relabel. Any ideas why it won't label the graph with the appropriate format?