Plot two graphs on one plot using matshade

[Oyun]

I am trying to graph 2 rates together. Codes are as below. None of my code produces error messages so I really have no clue why this line matshade(np$c_year, ci.pred(miapF, np), col=cl[i]) does not appear. Any help would be greatly appreciated. I am new to R and my apologies if this is too simple question.

 
 

     dataex:
    
   ' c_year age_group noofnewcases popno
    2005 20  112 1116
    2005 30 119 1184
    2005 40 257 1176
    2006 20 121 1141
    2006 30 138 1161
    2006 40 268 1164
    2007 20 203 1167
    2007 30 179 1145
    2007 40 258 1151'

   ' library (Epi)
        require(mgcv)
    yrF <-transform (yrF, A=age_group+1/2, P=c_year+1/2)    
        gam.d <- gam(
                    cbind(noofnewcases, popno) ~ s(c_year, by = age_group),
                    family = poisreg,
                    data = yrF
        )
    
        ag <- seq(20, 40, 10)
         
        n20 <- data.frame(c_year = 2005:2007, age_group = 20)
        n30 <- data.frame(c_year = 2005:2007, age_group = 30)
        n40 <- data.frame(c_year = 2005:2007, age_group = 40)
    
    
        miapF <- gam(
                    cbind(n1, popno / 10^5) ~ s(A, c_year, k = 15), 
                    family = poisreg, 
                    data = yrF
        )
        
        ag <- seq(20, 40, 10)
        
        cl <- gray(seq(.7, .1, length = 3))
        np <- data.frame(c_year = seq(2005, 2007, 0.5))
        
        plot(
            NA , log = "y", ylim = c(15, 1500), xlim = c(2005, 2007),
            xlab = "Year", ylab = "inc (per 100,000 Y)"
        )
        
        for(i in 1:2) {
            np$A <- ag[i]
            matshade(np$c_year, ci.pred(miapF, np), col = cl[i]) 
            matshade(
                n20$c_year, 
                cbind(
                    ci.pred(gam.d, n20) * 100000,
                    ci.pred(gam.d, n30) * 100000,
                    ci.pred(gam.d, n40) * 100000
             
                ),
                plot = TRUE, 
                col = c("red", "orange", "yellow"),
                alpha = 0, 
                lty = "44", 
                lend = "butt"
            )
        }'

[phil_hummel]

The question is not too simple, it is too complex. Are you trying to plot two lines with rates of different things over time?