diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77075f6..2c9c749 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## Version 4.8.0
+* Improved formula engine
+  - Does not cast column values to float
+  - Silences errors during evaluation, see `v:errmsg` for error information
+    from last evaluation for debugging issues with formulas
+
 ## Version 4.7.6.1
 * Improved handling of `g:table_mode_ignore_align` configuration, now allows
   per buffer overrides
diff --git a/README.md b/README.md
index 13446a0..f55d876 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# VIM Table Mode v4.7.6.1 [![Build Status](https://travis-ci.org/dhruvasagar/vim-table-mode.png?branch=master)](https://travis-ci.org/dhruvasagar/vim-table-mode)
+# VIM Table Mode v4.8.0 [![Build Status](https://travis-ci.org/dhruvasagar/vim-table-mode.png?branch=master)](https://travis-ci.org/dhruvasagar/vim-table-mode)
 
 An awesome automatic table creator & formatter allowing one to create neat
 tables as you type.
diff --git a/autoload/tablemode/spreadsheet/formula.vim b/autoload/tablemode/spreadsheet/formula.vim
index e1d0026..0ae8eb0 100644
--- a/autoload/tablemode/spreadsheet/formula.vim
+++ b/autoload/tablemode/spreadsheet/formula.vim
@@ -50,7 +50,7 @@ function! tablemode#spreadsheet#formula#Add(...) "{{{2
   endif
 endfunction
 
-function! tablemode#spreadsheet#formula#EvaluateExpr(expr, line) abort "{{{2
+function! tablemode#spreadsheet#formula#EvaluateExpr(expr, line) "{{{2
   let line = tablemode#utils#line(a:line)
   let [target, expr] = map(split(a:expr, '='), 'tablemode#utils#strip(v:val)')
   let cell = substitute(target, '\$', '', '')
@@ -98,15 +98,15 @@ function! tablemode#spreadsheet#formula#EvaluateExpr(expr, line) abort "{{{2
 
   if expr =~# '\$\-\?\d\+,\-\?\d\+'
     let expr = substitute(expr, '\$\(\-\?\d\+\),\(\-\?\d\+\)',
-          \ '\=str2float(tablemode#spreadsheet#cell#GetCells(line, submatch(1), submatch(2)))', 'g')
+          \ '\=tablemode#spreadsheet#cell#GetCells(line, submatch(1), submatch(2))', 'g')
   endif
 
   if cell =~# ','
     if expr =~# '\$'
       let expr = substitute(expr, '\$\(\d\+\)',
-          \ '\=str2float(tablemode#spreadsheet#cell#GetCells(line, row, submatch(1)))', 'g')
+          \ '\=tablemode#spreadsheet#cell#GetCells(line, row, submatch(1))', 'g')
     endif
-    call tablemode#spreadsheet#cell#SetCell(eval(expr), line, row, colm)
+    silent! call tablemode#spreadsheet#cell#SetCell(eval(expr), line, row, colm)
   else
     let [row, line] = [1, tablemode#spreadsheet#GetFirstRow(line)]
     while !s:IsFormulaLine(line)
@@ -114,10 +114,10 @@ function! tablemode#spreadsheet#formula#EvaluateExpr(expr, line) abort "{{{2
         let texpr = expr
         if expr =~# '\$'
           let texpr = substitute(texpr, '\$\(\d\+\)',
-                \ '\=str2float(tablemode#spreadsheet#cell#GetCells(line, row, submatch(1)))', 'g')
+                \ '\=tablemode#spreadsheet#cell#GetCells(line, row, submatch(1))', 'g')
         endif
 
-        call tablemode#spreadsheet#cell#SetCell(eval(texpr), line, row, colm)
+        silent! call tablemode#spreadsheet#cell#SetCell(eval(texpr), line, row, colm)
         let row += 1
       endif
       let line += 1
@@ -125,7 +125,7 @@ function! tablemode#spreadsheet#formula#EvaluateExpr(expr, line) abort "{{{2
   endif
 endfunction
 
-function! tablemode#spreadsheet#formula#EvaluateFormulaLine() abort "{{{2
+function! tablemode#spreadsheet#formula#EvaluateFormulaLine() "{{{2
   let exprs = []
   let cstring = &commentstring
   let matchexpr = ''
diff --git a/doc/table-mode.txt b/doc/table-mode.txt
index f1477fd..c22fe26 100644
--- a/doc/table-mode.txt
+++ b/doc/table-mode.txt
@@ -1,7 +1,7 @@
 *table-mode.txt*			Table Mode for easy table formatting
 ===============================================================================
 	Table Mode, THE AWESOME AUTOMATIC TABLE CREATOR & FORMATTER
-                               VERSION 4.7.6.1
+                               VERSION 4.8.0
 
 		Author: Dhruva Sagar <http://dhruvasagar.com/>
 		License: MIT <http://opensource.org/licenses/MIT/>