Hi, i have an issue and I hope sombody can help me out with my coding.

I have e.g. following code:

```
Col1 <- c(1,2,3,4,5,6,7,8,9,10)
Col2 <- c(0,0.1, 0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9)
colnames(Sampling_var)[1:4]
Sampling <- matrix(ncol=4, nrow=10)
Data <- data.frame(Col1,Col2)
op <- function(){
n <- qpois(runif(1), 3,5)
z <- replicate(n, {Data[match.closest(runif(1),Data$Col2),1]})
sum(z)}
for (x in 1:10) {
Loss <- replicate(5000, op())
Sampling[x,1] <- quantile(Loss, 0.975)
Sampling[x,2] <- quantile(Loss, 0.990)
Sampling[x,3] <- quantile(Loss, 0.999)
Sampling[x,4] <- mean(Loss)
}
```

If i run this code I'll get this error message: **error in sum(z) invalid 'type' (list) of argument**

I would be grateful if sombody could explain to me what I am droing wrong : )

Cheers