Dear C++ Gurus/Experts, I am writing a program to automate excel.My program is working well when I use integer (Write/Read) in excel.My program also works well when I use string.But the issue appears when I use array of strings.I am getting the issue as below "error C2664: 'SysAllocString' : cannot convert parameter 1 from 'char *' to 'const OLECHAR *' ". Please Help. Program: Code: //working good with strings for(int i=1; i<=15; i++) { for(int j=1; j<=15; j++) { // Create entry value for (i,j) BSTR b; VARIANT parm1; b = SysAllocString(L"Haroon"); // this line working good parm1.vt = VT_BSTR; parm1.bstrVal = b; // Add to safearray... long indices[] = {i,j}; SafeArrayPutElement(arr.parray, indices, &parm1); } } //Having problems with Array of strings //Array of strings char *hrs[]={"noor","riz","vignesh"}; for(int i=1; i<=15; i++) { for(int j=1; j<=15; j++) { // Create entry value for (i,j) BSTR b; VARIANT parm1; b = SysAllocString(hrs[0]); // issue in this line parm1.vt = VT_BSTR; parm1.bstrVal = b; // Add to safearray... long indices[] = {i,j}; SafeArrayPutElement(arr.parray, indices, &parm1); } }