How to remove and change bubbles on tm_bubbles

[Ann1]

I created a map that has only has a value of 1 in the column "labour". The issue I am getting is that the legend shows up as in 0.2 scale (image below).

this is the code I used

library(tmap)
tmap_mode("plot")
v11<-tm_shape(settingmap)+
  tm_polygons("Construction", palette= "Reds",
              colorNA="white",
              showNA=FALSE)+
  tm_shape(settingmap)+
  tm_bubbles(size="Labour",col="blue")+
  tm_shape(settingmap)+
  tm_bubbles(size="Capital",col="yellow")+
  tm_shape(worldmap2) +
  tm_borders(col = "grey",lwd = 0.5)+
  tm_layout(bg.color = "white")+
  tm_layout(frame = TRUE,outer.margins=c(.05,0,.05,0), inner.margins=c(0,0,.02,0), asp=0,
            legend.outside=TRUE,
            legend.position=c("right","bottom"),
            title.position = c('right','top'))
#            legend.stack = "horizontal")
v11

I replaced the tm_bubble of labour in hopes to get what I wanted but I got an error:

  tm_bubbles(size="Capital",col="yellow",
             style="fixed",
             breaks=c(1),
             labels(1))

Error: symbol shape(s) ('shape' argument) is/are neither numeric nor valid variable name(s)

How can I achieve only one bubble that shows up in the legend but as the smallest size in the range but with 1 ?
something like this:

[jasongeslois]

Try to change style to style = "cont" and see if that will work. It also allows the entering of breaks and may help with it being a whole number. https://www.r-bloggers.com/map-coloring-the-color-scale-styles-available-in-the-tmap-package/
If not, what does trying adding legend.format() and using the parameters you need?