fix: fix link fits with string input with error message pops

Author: stevenhua0320

news/fix-gui-functionality.rst

@@ -1,6 +1,6 @@
 **Added:**
 
-* No News Added: hot-fix on gui-functionality
+* <news item>
 
 **Changed:**
 
@@ -16,7 +16,7 @@
 
 **Fixed:**
 
-* <news item>
+* Fixed linked the fits with string input
 
 **Security:**
 

src/diffpy/pdfgui/gui/parameterspanel.py

@@ -250,7 +250,10 @@ def applyCellChange(self, row, col, value):
             temp = self.parameters[key].initialValue()
             if temp != value:
                 self.parameters[key].setInitial(value)
-                self.grid_parameters.SetCellValue(row, 0, str(float(value)))
+                if value is int or value is float:
+                    self.grid_parameters.SetCellValue(row, 0, str(float(value)))
+                else:
+                    self.grid_parameters.SetCellValue(row, 0, value)
                 self.mainFrame.needsSave()
 
         elif col == 1:  # flag "fixed"