r - Changing reactiveValues inside observeEvent in Shiny -


i new shiny. couldn't figure 1 out since don't think understand how reactivevalues work.

i want trigger eventreactive functions (dependent on reactive value appendscenarios$app) whenever find new column csv file read (input$file), after user clicks button (input$generate). however, seems last column csv file being used in other functions , there absolutely no change in value of appendscenarios$app following cat's show: (following code-block server.r)

newentry <- observeevent(input$generate, {     infile <- input$file     pricescens <- read.csv(infile$datapath)[,-1]     (i in (4:ncol(pricescens))) {         sce.name.csv <<- colnames(pricescens)[i]         new.price.csv <<- as.numeric(pricescens[,i])         newval <- appendscenarios$app + 1         cat("appendscenarios$app ", appendscenarios$app, "\n") #same below cat         reactive(appendscenarios$app <- newval)         cat("appendscenarios$app ", appendscenarios$app, "\n") # same above cat     } })

note: sce.name.csv , new.price.csv used in of eventreactive functions listen appendscenarios$app.


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