Date Field Got Converted to Number Field when Style is Applied on Data.

[chughk]

I am trying to write an excel file with openxlsx. When I apply below style to the data the date field gets converted to a number field. Below is the code. If I exclude the below code then date fields are fine.

Code

bodyStyle <- createStyle(fontSize = 12, fontName = "Arial") addStyle(myworkbook, sheet = 1, bodyStyle, rows = 2:nrow(mydata), cols = 1:ncol(mydata), gridExpand = TRUE)

• Version of openxlsx: 4.1.0
• Version of R: R version 3.5.1 (2018-07-02)