Attributes are linked to form controls according to their data type. The table below provides a list of form controls and the compatible data types that can be used with them.

Control Data Type
Checkbox Bit
Comment Unique Identifier (in case of communication with a second entity)
Date/Time Picker Date, DateTime, DateTime2
File Attachment NVarChar (size: 100, according to the number of attachable files), NVarChar_Max, VarChar, VarChar_Max
Free Draw VarBinary, VarBinary_Max.
Gantt Chart Unique Identifier (in case of communication with a second entity)
Grid Unique Identifier. It can be used to bind different fields together. The data type may or may not be same for each field in the list.
Nested Form Link Unique Identifier (in case of communication with a second entity)
Numeric Textbox Big Int, Decimal, Float, Int, Money, Numeric, Small Int, Small Money, Tiny Int.
Radio-Button List String Data Types (such as Char, NChar, NText, NVarChar, or Text), Numeric Data Types (such as Decimal, Float, Int, Numeric, or Real) , and the Bit (Boolean) data type.
Textbox (Single-Line, Multi-Line, Password) / Rich Textbox Char (Char or NChar), VarChar (VarChar or VarChar_Max), NVarChar (NVarChar or NVarChar_Max).
Time Duration DateTime
Tree Unique Identifier (in case of communication with a second entity)
User Picture VarChar (size: 36, in the case of communication with the MercUsers entity)
User Signature VarChar (size: 36, in the case of communication with the MercUsers entity)