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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Forum: Forum for Origin C Subject: Message: * HTML is OFF * Forum Code is ON Smilies Origin Ver. and Service Release (Select Help-->About Origin): 2022 Operating System:win 10 Hi, I'm facing a weird issue when trying to access axis tree. [code]void add_special_tick(double dTick, string strTick) { GraphLayer gl = Project.ActiveLayer(); if (gl) { Axis axesX = gl.XAxis; Scale scX(gl.X); Tree tr; tr = axesX.GetFormat(FPB_ALL, FOB_ALL, true, true); tr.Root.NewAxes.NewAxis2.Specials.SpecialCount.nVal = 1; tr.Root.NewAxes.NewAxis2.Specials.Specials.Special1.Type.nVal = 35; tr.Root.NewAxes.NewAxis2.Specials.Specials.Special1.Value.dVal = dTick; tr.Root.NewAxes.NewAxis2.Specials.Specials.Special1.EnableLabel.nVal = 1; tr.Root.NewAxes.NewAxis2.Specials.Specials.Special1.Label.strVal = strTick; double dX1 = scX.From; double dX2 = scX.To; double dTol = (dX2 - dX1) / 20; TreeNodeCollection tnc(tr.Root.NewAxes.NewAxis2.RefLines.RefLines, "RefLine"); foreach (TreeNode tn in tnc) { if (dTick + dTol > tn.Value.dVal && dTick - dTol < tn.Value.dVal) tn.Labels.Label1.Show.nVal = 0; } if (0 == axesX.UpdateThemeIDs(tr.Root)) { bool bRet = axesX.ApplyFormat(tr, true, true); } } }[/code] 1st Issue: If I want to get axis from and to, I need to use Scale object If I try to read tr.Root.Scale.From.dVal or tr.Root.Scale.To.dVal, I get an error saying that those variables are not declared. Why that ? When debugging, I can see that they exist Moreover, it's a treenode, so compiler shouldn't care whether that leaf exists or not 2nd issue: The function will add a special tick with label in a graph that has a few reflines with labels. If the special tick is near reflines labels, I will hide them Here again, I have an error saying that tn.Labels.Label1.Show.nVal is not declared Thanks for the help   Check here to subscribe to this topic.