Legend wont display in stacked bar graph where the 2 series of values are numerical

Question

I have a stacked bar graph with 2 numerical values and the bars are stacked on top of eachother. I would like to display a Legend that indicates the description of the 2 colors. Here it is my code but its not displaying. Any help from anyone I would be greatful for.

ggplot(data=my_data, aes(x = Xaxis)) + 
    ggtitle("My Title")+
    theme(plot.title = element_text(hjust = 0.5, face="bold"))+
    geom_col(aes(y = v1), fill ="red")+
    geom_col(aes(y = v2), fill="blue")+
    labs(y= "Amount", color ="Legend")+
    theme(legend.title = element_text(color='black',face='bold'),
        legend.text = element_text(color='black',face='bold'))+
    scale_y_continuous(labels = comma)

From the above code the legend does not display