change name in variables R whit for - r

Question

I'm trying to create variables to use, for each variable it's called,
M000
M001
M002
M003
Example
c.n_vars <- nrow(comb)
for (i in 1:c.n_vars)
{
paste("M",comb[i,1],comb[i,2],comb[i,3]) = Arima(y,order=c(arima[1,1],arima[2,1],arima[3,1]),seasonal=list(order=c(comb[i,1],comb[i,2],comb[i,3]),period=12))
}
where comb is all combinations
a <- c(0,1,2,3,4)
b <- c(0,1,2,3,4)
c <- c(0,1,2,3,4)
comb <- expand.grid(a, b,c)
row parameter1 parameter2 parameter3
1 0 0 0
2 1 0 0
3 2 0 0
4 3 0 0
5 4 0 0
6 0 1 0
7 1 1 0
8 2 1 0
9 3 1 0
10 4 1 0
11 0 2 0
12 1 2 0
13 2 2 0
14 3 2 0
15 4 2 0
and arima is
arima <- data.frame(c(2,1,4))
row parameters
1 2
2 1
3 4
i am trying to create
c.n_vars <- nrow(comb)
for (i in 1:c.n_vars)
{
paste("M",comb[i,1],comb[i,2],comb[i,3]) = Arima(y,order=c(arima[1,1],arima[2,1],arima[3,1]),seasonal=list(order=c(comb[i,1],comb[i,2],comb[i,3]),period=12))
}
this code must return
for i = 1
M000 = arima model saved in that variable
for i = 2
M100 = arima model saved in that variable
for i = 3
M200 = arima model saved in that variable
.
.
.
.
.
for i = 15
M420 = arima model saved in that variable
and the following error appears
Error in paste("M", comb[i, 1], comb[i, 2], comb[i, 3]) = Arima(y, order = c(arima[1, :
assignment target expands an object out of language
I need that each iteration of the variable 'i' be saved in a different variable
Is there any solution? or another way to do it

Answer 1

Your sample code is still incomplete. I was not able to run it. For example y is missing.
As Base_R_Best_R pointed out, you cannot use paste to create variables like that. You can use the following pattern instead. Also note that I replaced paste() with paste0() to avoid spaces in the names:
result = list()
for (i in 1:c.n_vars)
{
result[[paste0("M",comb[i,1],comb[i,2],comb[i,3])]] = Arima(y,order=c(arima[1,1],arima[2,1],arima[3,1]),seasonal=list(order=c(comb[i,1],comb[i,2],comb[i,3]),period=12))
}
Access your variables like this:
result$M100