Les "step" négatifs sont interdits

src/app/components/dialog-edit-param-values/dialog-edit-param-values.component.html

@@ -51,10 +51,10 @@
             <mat-form-field>
                 <input matInput class="form-control" type="number" inputmode="numeric" name="step-value" step="0.01"
                     [placeholder]="uitextPasVariation" [(ngModel)]="stepValue" #step="ngModel" name="step"
-                    required pattern="^-?([0-9]*\.)?([0-9]+[Ee]-?)?[0-9]+$">
+                    required pattern="^([0-9]*\.)?([0-9]+[Ee]-?)?[0-9]+$">
 
                     <mat-error *ngIf="step.errors">
-                        {{ uitextMustBeANumber }}
+                        {{ uitextMustBePositive }}
                     </mat-error>
             </mat-form-field>
         </form>

src/app/components/dialog-edit-param-values/dialog-edit-param-values.component.ts

@@ -437,6 +437,10 @@ export class DialogEditParamValuesComponent implements OnInit {
         return this.intlService.localizeText("INFO_PARAMFIELD_PARAMVARIER_EXT_STRATEGY");
     }
 
+    public get uitextMustBePositive() {
+      return this.intlService.localizeText("ERROR_PARAM_MUST_BE_POSITIVE");
+    }
+
     public ngOnInit() {
         this.initVariableValues();
     }