excel - Subscript out of range when trying to access 2d array value using variables -

i have workbook needs open workbook, copy range , paste in first workbook. range being copied 2d array. before pasting value, need check if value blank doesn't paste 0 table. after should paste value original spreadsheet , loop next value. array needs dynamic function run different sized tables. number of columns change, number of rows constant.

the getvalue2 function passes range myarray fine "subscript out of range" error occurs when try access individual values in myarray using variables ro , col.any insight how fix this? see code below.

public function multicolgetvalsrev2(startj integer, starti integer, endj integer, endi integer, startc integer, startr integer, endc integer, endr integer, instcountrow integer, instcountcol integer, p string, f string, s string, thisworksheet string)  dim myarray() variant dim colnum integer dim rownum integer dim ro integer dim col integer dim path, file, sheet string dim wkbk workbook  path = p file = f sheet = s colnum = endc - startc rownum = 24 ro = 0 col = 0 redim myarray(rownum, colnum)  'getvalue2 call myarray = getvalue2(path, file, startr, endr, startc, endc) redim preserve myarray(rownum, colnum) 'paste values flow map j = startj endj = starti endi     if col <= colnum         if ro <= rownum              'clear existing cell             thisworkbook.sheets(thisworksheet).cells(i, j).clear              'check if cell blank             if myarray(ro, col) = isblank 'error occurs here                 myarray(ro, col) = ""             end if              'paste value flow map             thisworkbook.sheets(thisworksheet).cells(i, j).value = myarray(ro, col)          end if     ro = ro + 1     end if next col = col + 1 ro = 0 next j end function 

the getvalue2 function follows:

private function getvalue2(path, file, startr, endr, startc, endc) dim wb workbook application.screenupdating = false application.asktoupdatelinks = false set wb = workbooks.open(path & application.pathseparator & file) wb.sheets(1).activate getvalue2 = range(cells(startr, startc), cells(endr, endc)) wb.close (false) application.asktoupdatelinks = true application.screenupdating = true end function