devexpress - Mask format conditioned -

using next code:

<dxe:spinedit name="spin1" isenabled="{binding data.isenabled}" mask="###.######" masktype="numeric"/> 

i select mask format in base of random value. kind of(pseudocode):

if (value1 == 1) {    mask="###.######" } else {    mask="###.##" } 

i working in idea (it defined in own grid):

<dxg:formatcondition expression="[value1] = '1'" fieldname="spin1">      <dxg:format /> </dxg:formatcondition> 

but how define mask in formatcondition specific case? can´t figure out...

well, got own...

just sharing if need it...

my idea send param viewmodel define mask in spin edit.

<dxg:gridcolumn fieldname="value1" allowediting="true" width="80">                     <dxg:gridcolumn.celltemplate>                         <datatemplate>                             <border background="#ffff99">                                 <dxe:spinedit name="spineditvalue1" mask="{binding data.value1mask}" masktype="numeric" maskuseasdisplayformat="true"/>                             </border>                         </datatemplate>                     </dxg:gridcolumn.celltemplate>           public string value1mask         {                          {                 if (designation == 1)                 {                     return "###.##%";                 }                 else                 {                     return "###.######";                 }             }         }