MI Distance question

[Jack Wierzchowski]

Hi All, I have a MapInfo table with four columns containing UTM coordinates (UTM_x_start, UTM_y_start, UTM_x_end, UTM_y_end). The table is not mappable. I tried to calculate distances based on these columns [Update Column Dist Set Dist = Distance (UTM_x_start, UTM_y_start, UTM_x_end, UTM_y_end, "km")], but it doesn't work, i.e. no distances are being calculated. Am I missing something here? (I also did Set Coordsys... and Set Distance Units "km" prior to running the Distance, but that didn't help, either) Thanks Jack